20573968 has 40 divisors (see below), whose sum is σ = 41247360. Its totient is φ = 9936000.

The previous prime is 20573951. The next prime is 20573981. The reversal of 20573968 is 86937502.

It is a self number, because there is not a number n which added to its sum of digits gives 20573968.

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 7 ways as a sum of consecutive naturals, for example, 81843 + ... + 82093.

It is an arithmetic number, because the mean of its divisors is an integer number (1031184).

Almost surely, 2^20573968 is an apocalyptic number.

It is an amenable number.

20573968 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

20573968 is a wasteful number, since it uses less digits than its factorization.

20573968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 20573968 is about 4535.8536131582. The cubic root of 20573968 is about 274.0139584769.

The spelling of 20573968 in words is "twenty million, five hundred seventy-three thousand, nine hundred sixty-eight".