18801372 has 24 divisors (see below), whose sum is σ = 43972992. Its totient is φ = 6252400.

The previous prime is 18801347. The next prime is 18801383. The reversal of 18801372 is 27310881.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4297 + ... + 7487.

It is an arithmetic number, because the mean of its divisors is an integer number (1832208).

Almost surely, 2^18801372 is an apocalyptic number.

18801372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18801372 is an abundant number, since it is smaller than the sum of its proper divisors (25171620).

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

18801372 is a wasteful number, since it uses less digits than its factorization.

18801372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3689 (or 3687 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 18801372 is about 4336.0548889515. The cubic root of 18801372 is about 265.9070472512.

The spelling of 18801372 in words is "eighteen million, eight hundred one thousand, three hundred seventy-two".