16640364 has 24 divisors (see below), whose sum is σ = 41814640. Its totient is φ = 5120064.

The previous prime is 16640359. The next prime is 16640387. The reversal of 16640364 is 46304661.

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, 53179 + ... + 53490.

Almost surely, 2^16640364 is an apocalyptic number.

It is an amenable number.

16640364 is an abundant number, since it is smaller than the sum of its proper divisors (25174276).

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

16640364 is a wasteful number, since it uses less digits than its factorization.

16640364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106689 (or 106687 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 16640364 is about 4079.2602270510. The cubic root of 16640364 is about 255.3020335046.

The spelling of 16640364 in words is "sixteen million, six hundred forty thousand, three hundred sixty-four".