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38807893771992 = 23323117387049181
BaseRepresentation
bin10001101001011101010101…
…01110010000011011011000
312002101222221211202001210200
420310232222232100123120
520041312031301200432
6214312033354342200
711113530533226132
oct1064565256203330
9162358854661720
1038807893771992
1111402376350794
12442929112a960
13188675150b677
149824524c6052
15474738046a7c
hex234baab906d8

38807893771992 has 48 divisors (see below), whose sum is σ = 108495186895680. Its totient is φ = 12518675409600.

The previous prime is 38807893771949. The next prime is 38807893772003. The reversal of 38807893771992 is 29917739870883.

38807893771992 is a `hidden beast` number, since 3 + 8 + 80 + 7 + 89 + 377 + 1 + 9 + 92 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8693522359 + ... + 8693526822.

It is an arithmetic number, because the mean of its divisors is an integer number (2260316393660).

Almost surely, 238807893771992 is an apocalyptic number.

It is an amenable number.

38807893771992 is an abundant number, since it is smaller than the sum of its proper divisors (69687293123688).

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

38807893771992 is a wasteful number, since it uses less digits than its factorization.

38807893771992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17387049224 (or 17387049217 counting only the distinct ones).

The product of its (nonzero) digits is 2304433152, while the sum is 81.

The spelling of 38807893771992 in words is "thirty-eight trillion, eight hundred seven billion, eight hundred ninety-three million, seven hundred seventy-one thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 31 36 62 72 93 124 186 248 279 372 558 744 1116 2232 17387049181 34774098362 52161147543 69548196724 104322295086 139096393448 156483442629 208644590172 312966885258 417289180344 538998524611 625933770516 1077997049222 1251867541032 1616995573833 2155994098444 3233991147666 4311988196888 4850986721499 6467982295332 9701973442998 12935964590664 19403946885996 38807893771992