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38812357768 = 23192311101933
BaseRepresentation
bin100100001001011001…
…011001010010001000
310201011220022001122011
4210021121121102020
51113441430422033
625455151305304
72542543412002
oct441131312210
9121156261564
1038812357768
1115507622938
12763221b234
133876cc6b92
141c42977372
1510225dcccd
hex909659488

38812357768 has 32 divisors (see below), whose sum is σ = 79933924800. Its totient is φ = 17585460288.

The previous prime is 38812357751. The next prime is 38812357777. The reversal of 38812357768 is 86775321883.

It is a super-2 number, since 2×388123577682 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5547471 + ... + 5554462.

It is an arithmetic number, because the mean of its divisors is an integer number (2497935150).

Almost surely, 238812357768 is an apocalyptic number.

38812357768 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

38812357768 is an abundant number, since it is smaller than the sum of its proper divisors (41121567032).

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

38812357768 is a wasteful number, since it uses less digits than its factorization.

38812357768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11101981 (or 11101977 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 58.

The spelling of 38812357768 in words is "thirty-eight billion, eight hundred twelve million, three hundred fifty-seven thousand, seven hundred sixty-eight".

Divisors: 1 2 4 8 19 23 38 46 76 92 152 184 437 874 1748 3496 11101933 22203866 44407732 88815464 210936727 255344459 421873454 510688918 843746908 1021377836 1687493816 2042755672 4851544721 9703089442 19406178884 38812357768