18296920 has 32 divisors (see below), whose sum is σ = 41577120. Its totient is φ = 7246080.

The previous prime is 18296897. The next prime is 18296921. The reversal of 18296920 is 2969281.

It is a self number, because there is not a number n which added to its sum of digits gives 18296920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18296921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1900 + ... + 6340.

It is an arithmetic number, because the mean of its divisors is an integer number (1299285).

Almost surely, 2^18296920 is an apocalyptic number.

18296920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18296920 is an abundant number, since it is smaller than the sum of its proper divisors (23280200).

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

18296920 is a wasteful number, since it uses less digits than its factorization.

18296920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4555 (or 4551 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 18296920 is about 4277.4899181646. The cubic root of 18296920 is about 263.5073072805.

The spelling of 18296920 in words is "eighteen million, two hundred ninety-six thousand, nine hundred twenty".