18672492 has 24 divisors (see below), whose sum is σ = 44583616. Its totient is φ = 6079248.

The previous prime is 18672487. The next prime is 18672499. The reversal of 18672492 is 29427681.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18672492.

It is not an unprimeable number, because it can be changed into a prime (18672499) 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, 17578 + ... + 18609.

Almost surely, 2^18672492 is an apocalyptic number.

18672492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18672492 is an abundant number, since it is smaller than the sum of its proper divisors (25911124).

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

18672492 is a wasteful number, since it uses less digits than its factorization.

18672492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36237 (or 36235 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 18672492 is about 4321.1678976869. The cubic root of 18672492 is about 265.2980721024.

It can be divided in two parts, 1867 and 2492, that multiplied together give a palindrome (4652564).

The spelling of 18672492 in words is "eighteen million, six hundred seventy-two thousand, four hundred ninety-two".