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11020800400 = 24522921812
BaseRepresentation
bin10100100001110010…
…00001000110010000
31001110001120200000121
422100321001012100
5140032311103100
65021330000024
7540051154261
oct122071010620
931401520017
1011020800400
114745a55505
122176a16014
13106832b18c
14767966968
154477ec51a
hex290e41190

11020800400 has 135 divisors (see below), whose sum is σ = 27574312233. Its totient is φ = 4232793600.

The previous prime is 11020800379. The next prime is 11020800433. The reversal of 11020800400 is 400802011.

It is a happy number.

The square root of 11020800400 is 104980.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 11019120784 + 1679616 = 104972^2 + 1296^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 60888310 + ... + 60888490.

Almost surely, 211020800400 is an apocalyptic number.

11020800400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11020800400 is the 104980-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11020800400

11020800400 is an abundant number, since it is smaller than the sum of its proper divisors (16553511833).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11020800400 is an equidigital number, since it uses as much as digits as its factorization.

11020800400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Multiplying 11020800400 by its sum of digits (16), we get a square (176332806400 = 4199202).

11020800400 divided by its sum of digits (16) gives a square (688800025 = 262452).

Multiplying 11020800400 by its product of nonzero digits (64), we get a square (705331225600 = 8398402).

The spelling of 11020800400 in words is "eleven billion, twenty million, eight hundred thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 29 40 50 58 80 100 116 145 181 200 232 290 362 400 464 580 724 725 841 905 1160 1448 1450 1682 1810 2320 2896 2900 3364 3620 4205 4525 5249 5800 6728 7240 8410 9050 10498 11600 13456 14480 16820 18100 20996 21025 26245 32761 33640 36200 41992 42050 52490 65522 67280 72400 83984 84100 104980 131044 131225 152221 163805 168200 209960 262088 262450 304442 327610 336400 419920 524176 524900 608884 655220 761105 819025 950069 1049800 1217768 1310440 1522210 1638050 1900138 2099600 2435536 2620880 3044420 3276100 3800276 3805525 4750345 6088840 6552200 7600552 7611050 9500690 12177680 13104400 15201104 15222100 19001380 23751725 27552001 30444200 38002760 47503450 55104002 60888400 76005520 95006900 110208004 137760005 190013800 220416008 275520010 380027600 440832016 551040020 688800025 1102080040 1377600050 2204160080 2755200100 5510400200 11020800400