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4207680 = 26335487
BaseRepresentation
bin10000000011010001000000
321220202212000
4100003101000
52034121210
6230104000
750523201
oct20032100
97822760
104207680
112414324
1214ab000
13b44269
147b75a8
15581ac0
hex403440

4207680 has 112 divisors (see below), whose sum is σ = 14874240. Its totient is φ = 1119744.

The previous prime is 4207663. The next prime is 4207691. The reversal of 4207680 is 867024.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8397 + ... + 8883.

Almost surely, 24207680 is an apocalyptic number.

4207680 is a gapful number since it is divisible by the number (40) 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 4207680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7437120).

4207680 is an abundant number, since it is smaller than the sum of its proper divisors (10666560).

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

4207680 is a wasteful number, since it uses less digits than its factorization.

4207680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 4207680 is about 2051.2630255528. The cubic root of 4207680 is about 161.4411470388.

It can be divided in two parts, 420 and 7680, that added together give a square (8100 = 902).

The spelling of 4207680 in words is "four million, two hundred seven thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 90 96 108 120 135 144 160 180 192 216 240 270 288 320 360 432 480 487 540 576 720 864 960 974 1080 1440 1461 1728 1948 2160 2435 2880 2922 3896 4320 4383 4870 5844 7305 7792 8640 8766 9740 11688 13149 14610 15584 17532 19480 21915 23376 26298 29220 31168 35064 38960 43830 46752 52596 58440 65745 70128 77920 87660 93504 105192 116880 131490 140256 155840 175320 210384 233760 262980 280512 350640 420768 467520 525960 701280 841536 1051920 1402560 2103840 4207680