18548472 has 16 divisors (see below), whose sum is σ = 46371240. Its totient is φ = 6182816.

The previous prime is 18548449. The next prime is 18548483. The reversal of 18548472 is 27484581.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18548472.

It is a congruent number.

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, 386403 + ... + 386450.

Almost surely, 2^18548472 is an apocalyptic number.

18548472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18548472 is an abundant number, since it is smaller than the sum of its proper divisors (27822768).

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

18548472 is a wasteful number, since it uses less digits than its factorization.

18548472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772862 (or 772858 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 18548472 is about 4306.7937029767. The cubic root of 18548472 is about 264.7094097192.

The spelling of 18548472 in words is "eighteen million, five hundred forty-eight thousand, four hundred seventy-two".