18294972 has 24 divisors (see below), whose sum is σ = 42873600. Its totient is φ = 6071856.

The previous prime is 18294971. The next prime is 18294973. The reversal of 18294972 is 27949281.

It is an interprime number because it is at equal distance from previous prime (18294971) and next prime (18294973).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18294971) 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, 322 + ... + 6057.

It is an arithmetic number, because the mean of its divisors is an integer number (1786400).

Almost surely, 2^18294972 is an apocalyptic number.

18294972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18294972 is an abundant number, since it is smaller than the sum of its proper divisors (24578628).

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

18294972 is a wasteful number, since it uses less digits than its factorization.

18294972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6625 (or 6623 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 18294972 is about 4277.2622084693. The cubic root of 18294972 is about 263.4979554251.

The spelling of 18294972 in words is "eighteen million, two hundred ninety-four thousand, nine hundred seventy-two".