18225924 has 12 divisors (see below), whose sum is σ = 42527184. Its totient is φ = 6075304.

The previous prime is 18225919. The next prime is 18225947. The reversal of 18225924 is 42952281.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759402 + ... + 759425.

It is an arithmetic number, because the mean of its divisors is an integer number (3543932).

Almost surely, 2^18225924 is an apocalyptic number.

It is an amenable number.

18225924 is an abundant number, since it is smaller than the sum of its proper divisors (24301260).

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

18225924 is a wasteful number, since it uses less digits than its factorization.

18225924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518834 (or 1518832 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 18225924 is about 4269.1830600245. The cubic root of 18225924 is about 263.1660437589.

It can be divided in two parts, 182 and 25924, that added together give a triangular number (26106 = T₂₂₈).

The spelling of 18225924 in words is "eighteen million, two hundred twenty-five thousand, nine hundred twenty-four".