18880536 has 32 divisors (see below), whose sum is σ = 47674800. Its totient is φ = 6230400.

The previous prime is 18880529. The next prime is 18880553. The reversal of 18880536 is 63508881.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18880494 and 18880503.

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, 1471 + ... + 6318.

Almost surely, 2^18880536 is an apocalyptic number.

It is an amenable number.

18880536 is an abundant number, since it is smaller than the sum of its proper divisors (28794264).

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

18880536 is a wasteful number, since it uses less digits than its factorization.

18880536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7899 (or 7895 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 18880536 is about 4345.1738745417. The cubic root of 18880536 is about 266.2797290968.

The spelling of 18880536 in words is "eighteen million, eight hundred eighty thousand, five hundred thirty-six".