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38388385164 = 22359415913037
BaseRepresentation
bin100011110000001000…
…000100010110001100
310200002100112000120010
4203300020010112030
51112104411311124
625345124153220
72526204614163
oct436010042614
9120070460503
1038388385164
111530a273a58
127534238810
13380a210c0c
141c025323da
15eea291529
hex8f020458c

38388385164 has 48 divisors (see below), whose sum is σ = 91119974400. Its totient is φ = 12575255616.

The previous prime is 38388385163. The next prime is 38388385169. The reversal of 38388385164 is 46158388383.

It is not an unprimeable number, because it can be changed into a prime (38388385163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2938054 + ... + 2951090.

It is an arithmetic number, because the mean of its divisors is an integer number (1898332800).

Almost surely, 238388385164 is an apocalyptic number.

It is an amenable number.

38388385164 is an abundant number, since it is smaller than the sum of its proper divisors (52731589236).

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

38388385164 is a wasteful number, since it uses less digits than its factorization.

38388385164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17262 (or 17260 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 57.

The spelling of 38388385164 in words is "thirty-eight billion, three hundred eighty-eight million, three hundred eighty-five thousand, one hundred sixty-four".

Divisors: 1 2 3 4 6 12 59 118 177 236 354 708 4159 8318 12477 13037 16636 24954 26074 39111 49908 52148 78222 156444 245381 490762 736143 769183 981524 1472286 1538366 2307549 2944572 3076732 4615098 9230196 54220883 108441766 162662649 216883532 325325298 650650596 3199032097 6398064194 9597096291 12796128388 19194192582 38388385164