20764746 has 12 divisors (see below), whose sum is σ = 44990322. Its totient is φ = 6921576.

The previous prime is 20764717. The next prime is 20764753. The reversal of 20764746 is 64746702.

20764746 is a `hidden beast` number, since 2 + 0 + 7 + 647 + 4 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10595025 + 10169721 = 3255^2 + 3189^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20764746.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 576781 + ... + 576816.

Almost surely, 2^20764746 is an apocalyptic number.

20764746 is an abundant number, since it is smaller than the sum of its proper divisors (24225576).

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

20764746 is a wasteful number, since it uses less digits than its factorization.

20764746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153605 (or 1153602 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 20764746 is about 4556.8350858902. The cubic root of 20764746 is about 274.8583115833.

The spelling of 20764746 in words is "twenty million, seven hundred sixty-four thousand, seven hundred forty-six".