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38742227832 = 23371120964409
BaseRepresentation
bin100100000101001101…
…110111101101111000
310201000000100002110010
4210011031313231320
51113321002242312
625444204221520
72541032334360
oct440515675570
9121000302403
1038742227832
1115480a83210
12761283a8a0
133865611189
141c3751d9a0
15101b38893c
hex905377b78

38742227832 has 64 divisors (see below), whose sum is σ = 120755001600. Its totient is φ = 10062915840.

The previous prime is 38742227819. The next prime is 38742227899. The reversal of 38742227832 is 23872224783.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10480357 + ... + 10484052.

It is an arithmetic number, because the mean of its divisors is an integer number (1886796900).

Almost surely, 238742227832 is an apocalyptic number.

It is an amenable number.

38742227832 is an abundant number, since it is smaller than the sum of its proper divisors (82012773768).

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

38742227832 is a wasteful number, since it uses less digits than its factorization.

38742227832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20964436 (or 20964432 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 48.

The spelling of 38742227832 in words is "thirty-eight billion, seven hundred forty-two million, two hundred twenty-seven thousand, eight hundred thirty-two".

Divisors: 1 2 3 4 6 7 8 11 12 14 21 22 24 28 33 42 44 56 66 77 84 88 132 154 168 231 264 308 462 616 924 1848 20964409 41928818 62893227 83857636 125786454 146750863 167715272 230608499 251572908 293501726 440252589 461216998 503145816 587003452 691825497 880505178 922433996 1174006904 1383650994 1614259493 1761010356 1844867992 2767301988 3228518986 3522020712 4842778479 5534603976 6457037972 9685556958 12914075944 19371113916 38742227832