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138796794 = 2332570311
BaseRepresentation
bin10000100010111…
…01111011111010
3100200011121102000
420101131323322
5241012444134
621434521430
73303516243
oct1021357372
9320147360
10138796794
11713900a4
123a596276
13229a87a6
141460dcca
15c2b9e99
hex845defa

138796794 has 16 divisors (see below), whose sum is σ = 308437440. Its totient is φ = 46265580.

The previous prime is 138796787. The next prime is 138796807. The reversal of 138796794 is 497697831.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 2570311 = 138796794 / (1 + 3 + 8 + 7 + 9 + 6 + 7 + 9 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 138796794.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1285102 + ... + 1285209.

It is an arithmetic number, because the mean of its divisors is an integer number (19277340).

Almost surely, 2138796794 is an apocalyptic number.

138796794 is an abundant number, since it is smaller than the sum of its proper divisors (169640646).

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

138796794 is a wasteful number, since it uses less digits than its factorization.

138796794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570322 (or 2570316 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 138796794 is about 11781.2051166254. The cubic root of 138796794 is about 517.7575949236.

The spelling of 138796794 in words is "one hundred thirty-eight million, seven hundred ninety-six thousand, seven hundred ninety-four".

Divisors: 1 2 3 6 9 18 27 54 2570311 5140622 7710933 15421866 23132799 46265598 69398397 138796794