122890164 has 24 divisors (see below), whose sum is σ = 288250368. Its totient is φ = 40748160.

The previous prime is 122890147. The next prime is 122890177. The reversal of 122890164 is 461098221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24517 + ... + 29100.

It is an arithmetic number, because the mean of its divisors is an integer number (12010432).

Almost surely, 2^122890164 is an apocalyptic number.

It is an amenable number.

122890164 is an abundant number, since it is smaller than the sum of its proper divisors (165360204).

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

122890164 is a wasteful number, since it uses less digits than its factorization.

122890164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53815 (or 53813 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 122890164 is about 11085.5836111591. The cubic root of 122890164 is about 497.1709080014.

The spelling of 122890164 in words is "one hundred twenty-two million, eight hundred ninety thousand, one hundred sixty-four".