18492372 has 36 divisors (see below), whose sum is σ = 48359220. Its totient is φ = 5951232.

The previous prime is 18492361. The next prime is 18492373. The reversal of 18492372 is 27329481.

It can be written as a sum of positive squares in 2 ways, for example, as 14107536 + 4384836 = 3756^2 + 2094^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18492373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7813 + ... + 9900.

Almost surely, 2^18492372 is an apocalyptic number.

18492372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18492372 is an abundant number, since it is smaller than the sum of its proper divisors (29866848).

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

18492372 is a wasteful number, since it uses less digits than its factorization.

18492372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17752 (or 17747 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 18492372 is about 4300.2758051083. The cubic root of 18492372 is about 264.4422683143.

The spelling of 18492372 in words is "eighteen million, four hundred ninety-two thousand, three hundred seventy-two".