102690920 has 32 divisors (see below), whose sum is σ = 233845920. Its totient is φ = 40580160.

The previous prime is 102690919. The next prime is 102690961. The reversal of 102690920 is 29096201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12146 + ... + 18785.

It is an arithmetic number, because the mean of its divisors is an integer number (7307685).

Almost surely, 2^102690920 is an apocalyptic number.

102690920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102690920 is an abundant number, since it is smaller than the sum of its proper divisors (131155000).

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

102690920 is a wasteful number, since it uses less digits than its factorization.

102690920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31025 (or 31021 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 102690920 is about 10133.6528458399. The cubic root of 102690920 is about 468.2854688091.

The spelling of 102690920 in words is "one hundred two million, six hundred ninety thousand, nine hundred twenty".