20993296 has 20 divisors (see below), whose sum is σ = 42443712. Its totient is φ = 10040096.

The previous prime is 20993281. The next prime is 20993339. The reversal of 20993296 is 69239902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28156 + ... + 28891.

Almost surely, 2^20993296 is an apocalyptic number.

It is an amenable number.

20993296 is an abundant number, since it is smaller than the sum of its proper divisors (21450416).

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

20993296 is a wasteful number, since it uses less digits than its factorization.

20993296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57078 (or 57072 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 20993296 is about 4581.8441702005. The cubic root of 20993296 is about 275.8630560568.

The spelling of 20993296 in words is "twenty million, nine hundred ninety-three thousand, two hundred ninety-six".