20568672 has 36 divisors (see below), whose sum is σ = 58492980. Its totient is φ = 6856128.

The previous prime is 20568661. The next prime is 20568673. The reversal of 20568672 is 27686502.

20568672 is a `hidden beast` number, since 20 + 568 + 6 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20568673) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35422 + ... + 35997.

It is an arithmetic number, because the mean of its divisors is an integer number (1624805).

Almost surely, 2^20568672 is an apocalyptic number.

It is an amenable number.

20568672 is an abundant number, since it is smaller than the sum of its proper divisors (37924308).

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

20568672 is a wasteful number, since it uses less digits than its factorization.

20568672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71435 (or 71424 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 20568672 is about 4535.2697824937. The cubic root of 20568672 is about 273.9904449045.

The spelling of 20568672 in words is "twenty million, five hundred sixty-eight thousand, six hundred seventy-two".