122752638 has 32 divisors (see below), whose sum is σ = 273611520. Its totient is φ = 40793400.

The previous prime is 122752613. The next prime is 122752657. The reversal of 122752638 is 836257221.

122752638 is a `hidden beast` number, since 12 + 2 + 7 + 5 + 2 + 638 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15463 + ... + 22013.

It is an arithmetic number, because the mean of its divisors is an integer number (8550360).

Almost surely, 2^122752638 is an apocalyptic number.

122752638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

122752638 is an abundant number, since it is smaller than the sum of its proper divisors (150858882).

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

122752638 is a wasteful number, since it uses less digits than its factorization.

122752638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6909 (or 6903 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 122752638 is about 11079.3789537140. The cubic root of 122752638 is about 496.9853779703.

The spelling of 122752638 in words is "one hundred twenty-two million, seven hundred fifty-two thousand, six hundred thirty-eight".