20571364 has 12 divisors (see below), whose sum is σ = 39272688. Its totient is φ = 9350600.

The previous prime is 20571359. The next prime is 20571379. The reversal of 20571364 is 46317502.

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, 233722 + ... + 233809.

It is an arithmetic number, because the mean of its divisors is an integer number (3272724).

Almost surely, 2^20571364 is an apocalyptic number.

It is an amenable number.

20571364 is a deficient number, since it is larger than the sum of its proper divisors (18701324).

20571364 is a wasteful number, since it uses less digits than its factorization.

20571364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467546 (or 467544 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20571364 is about 4535.5665577742. The cubic root of 20571364 is about 274.0023975495.

Adding to 20571364 its reverse (46317502), we get a palindrome (66888866).

The spelling of 20571364 in words is "twenty million, five hundred seventy-one thousand, three hundred sixty-four".