20564352 has 48 divisors (see below), whose sum is σ = 59179380. Its totient is φ = 6854400.

The previous prime is 20564321. The next prime is 20564359. The reversal of 20564352 is 25346502.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20564359) 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, 7774 + ... + 10077.

Almost surely, 2^20564352 is an apocalyptic number.

It is an amenable number.

20564352 is an abundant number, since it is smaller than the sum of its proper divisors (38615028).

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

20564352 is a wasteful number, since it uses less digits than its factorization.

20564352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17871 (or 17856 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 20564352 is about 4534.7934903367. The cubic root of 20564352 is about 273.9712616599.

The spelling of 20564352 in words is "twenty million, five hundred sixty-four thousand, three hundred fifty-two".