20583916 has 12 divisors (see below), whose sum is σ = 37917880. Its totient is φ = 9750240.

The previous prime is 20583841. The next prime is 20583931. The reversal of 20583916 is 61938502.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135345 + ... + 135496.

Almost surely, 2^20583916 is an apocalyptic number.

It is an amenable number.

20583916 is a deficient number, since it is larger than the sum of its proper divisors (17333964).

20583916 is a wasteful number, since it uses less digits than its factorization.

20583916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270864 (or 270862 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 20583916 is about 4536.9500768688. The cubic root of 20583916 is about 274.0581154367.

The spelling of 20583916 in words is "twenty million, five hundred eighty-three thousand, nine hundred sixteen".