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1230552400 = 245271139953
BaseRepresentation
bin100100101011000…
…1011110101010000
310011202111112112211
41021112023311100
510010010134100
6322035001504
742331344220
oct11126136520
93152445484
101230552400
11581684260
122a4139294
13167c30a1c
14b9604080
15730731ba
hex4958bd50

1230552400 has 120 divisors (see below), whose sum is σ = 3685996224. Its totient is φ = 383539200.

The previous prime is 1230552383. The next prime is 1230552469. The reversal of 1230552400 is 42550321.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10824 + ... + 50776.

Almost surely, 21230552400 is an apocalyptic number.

1230552400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230552400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1842998112).

1230552400 is an abundant number, since it is smaller than the sum of its proper divisors (2455443824).

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

1230552400 is a wasteful number, since it uses less digits than its factorization.

1230552400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39989 (or 39978 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1230552400 is about 35079.2303222291. The cubic root of 1230552400 is about 1071.6016424757.

The spelling of 1230552400 in words is "one billion, two hundred thirty million, five hundred fifty-two thousand, four hundred".

Divisors: 1 2 4 5 7 8 10 11 14 16 20 22 25 28 35 40 44 50 55 56 70 77 80 88 100 110 112 140 154 175 176 200 220 275 280 308 350 385 400 440 550 560 616 700 770 880 1100 1232 1400 1540 1925 2200 2800 3080 3850 4400 6160 7700 15400 30800 39953 79906 159812 199765 279671 319624 399530 439483 559342 639248 799060 878966 998825 1118684 1398355 1598120 1757932 1997650 2197415 2237368 2796710 3076381 3196240 3515864 3995300 4394830 4474736 5593420 6152762 6991775 7031728 7990600 8789660 10987075 11186840 12305524 13983550 15381905 15981200 17579320 21974150 22373680 24611048 27967100 30763810 35158640 43948300 49222096 55934200 61527620 76909525 87896600 111868400 123055240 153819050 175793200 246110480 307638100 615276200 1230552400