122928520 has 64 divisors (see below), whose sum is σ = 324959040. Its totient is φ = 41260800.

The previous prime is 122928457. The next prime is 122928539. The reversal of 122928520 is 25829221.

It is a super-2 number, since 2×122928520² = 30222842058780800, which contains 22 as substring.

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, 5026 + ... + 16465.

It is an arithmetic number, because the mean of its divisors is an integer number (5077485).

Almost surely, 2^122928520 is an apocalyptic number.

122928520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122928520 is an abundant number, since it is smaller than the sum of its proper divisors (202030520).

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

122928520 is a wasteful number, since it uses less digits than its factorization.

122928520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21526 (or 21522 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 122928520 is about 11087.3134708098. The cubic root of 122928520 is about 497.2226276376. Note that the first 3 decimals are identical.

The spelling of 122928520 in words is "one hundred twenty-two million, nine hundred twenty-eight thousand, five hundred twenty".