20765752 has 32 divisors (see below), whose sum is σ = 44644320. Its totient is φ = 8870400.

The previous prime is 20765743. The next prime is 20765783. The reversal of 20765752 is 25756702.

It is a happy number.

It is a super-2 number, since 2×20765752² = 862432912251008, which contains 22 as substring.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 33348 + ... + 33964.

It is an arithmetic number, because the mean of its divisors is an integer number (1395135).

Almost surely, 2^20765752 is an apocalyptic number.

It is an amenable number.

20765752 is an abundant number, since it is smaller than the sum of its proper divisors (23878568).

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

20765752 is a wasteful number, since it uses less digits than its factorization.

20765752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1227 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 20765752 is about 4556.9454681837. The cubic root of 20765752 is about 274.8627502442.

The spelling of 20765752 in words is "twenty million, seven hundred sixty-five thousand, seven hundred fifty-two".