138795456 has 56 divisors (see below), whose sum is σ = 386567680. Its totient is φ = 43828992.

The previous prime is 138795451. The next prime is 138795467. The reversal of 138795456 is 654597831.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138795451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15376 + ... + 22671.

Almost surely, 2^138795456 is an apocalyptic number.

138795456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138795456 is an abundant number, since it is smaller than the sum of its proper divisors (247772224).

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

138795456 is a wasteful number, since it uses less digits than its factorization.

138795456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38081 (or 38071 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 138795456 is about 11781.1483311263. The cubic root of 138795456 is about 517.7559311919.

The spelling of 138795456 in words is "one hundred thirty-eight million, seven hundred ninety-five thousand, four hundred fifty-six".