18996144 has 40 divisors (see below), whose sum is σ = 49251312. Its totient is φ = 6309120.

The previous prime is 18996097. The next prime is 18996151. The reversal of 18996144 is 44169981.

It is a junction number, because it is equal to n+sod(n) for n = 18996096 and 18996105.

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, 17374 + ... + 18434.

Almost surely, 2^18996144 is an apocalyptic number.

It is an amenable number.

18996144 is an abundant number, since it is smaller than the sum of its proper divisors (30255168).

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

18996144 is a wasteful number, since it uses less digits than its factorization.

18996144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1439 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 18996144 is about 4358.4566075619. The cubic root of 18996144 is about 266.8221121478.

The spelling of 18996144 in words is "eighteen million, nine hundred ninety-six thousand, one hundred forty-four".