20864754 has 12 divisors (see below), whose sum is σ = 45207006. Its totient is φ = 6954912.

The previous prime is 20864743. The next prime is 20864759. The reversal of 20864754 is 45746802.

20864754 is a `hidden beast` number, since 2 + 0 + 8 + 647 + 5 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18533025 + 2331729 = 4305^2 + 1527^2 .

It is not an unprimeable number, because it can be changed into a prime (20864759) 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, 579559 + ... + 579594.

Almost surely, 2^20864754 is an apocalyptic number.

20864754 is an abundant number, since it is smaller than the sum of its proper divisors (24342252).

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

20864754 is a wasteful number, since it uses less digits than its factorization.

20864754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159161 (or 1159158 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 20864754 is about 4567.7953106504. The cubic root of 20864754 is about 275.2988662631.

The spelling of 20864754 in words is "twenty million, eight hundred sixty-four thousand, seven hundred fifty-four".