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38906120862 = 2327308778737
BaseRepresentation
bin100100001110111111…
…000100101010011110
310201102102201201102100
4210032333010222132
51114134431331422
625512341105530
72545062366540
oct441677045236
9121372651370
1038906120862
11155555444a4
1276596b82a6
1338905658bb
141c511c3690
15102a95e7ac
hex90efc4a9e

38906120862 has 24 divisors (see below), whose sum is σ = 96338966256. Its totient is φ = 11116034496.

The previous prime is 38906120839. The next prime is 38906120917. The reversal of 38906120862 is 26802160983.

38906120862 is a `hidden beast` number, since 389 + 0 + 6 + 1 + 208 + 62 = 666.

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 11 ways as a sum of consecutive naturals, for example, 154389243 + ... + 154389494.

It is an arithmetic number, because the mean of its divisors is an integer number (4014123594).

Almost surely, 238906120862 is an apocalyptic number.

38906120862 is an abundant number, since it is smaller than the sum of its proper divisors (57432845394).

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

38906120862 is a wasteful number, since it uses less digits than its factorization.

38906120862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308778752 (or 308778749 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 38906120862 in words is "thirty-eight billion, nine hundred six million, one hundred twenty thousand, eight hundred sixty-two".

Divisors: 1 2 3 6 7 9 14 18 21 42 63 126 308778737 617557474 926336211 1852672422 2161451159 2779008633 4322902318 5558017266 6484353477 12968706954 19453060431 38906120862