20765892 has 48 divisors (see below), whose sum is σ = 55665792. Its totient is φ = 5902080.

The previous prime is 20765873. The next prime is 20765893. The reversal of 20765892 is 29856702.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20765892.

It is not an unprimeable number, because it can be changed into a prime (20765893) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19042 + ... + 20102.

It is an arithmetic number, because the mean of its divisors is an integer number (1159704).

Almost surely, 2^20765892 is an apocalyptic number.

It is an amenable number.

20765892 is an abundant number, since it is smaller than the sum of its proper divisors (34899900).

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

20765892 is a wasteful number, since it uses less digits than its factorization.

20765892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 20765892 is about 4556.9608293247. The cubic root of 20765892 is about 274.8633679391.

The spelling of 20765892 in words is "twenty million, seven hundred sixty-five thousand, eight hundred ninety-two".