20264808 has 32 divisors (see below), whose sum is σ = 50772960. Its totient is φ = 6740160.

The previous prime is 20264791. The next prime is 20264809. The reversal of 20264808 is 80846202.

It is a happy number.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20264809) 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 7 ways as a sum of consecutive naturals, for example, 19338 + ... + 20358.

It is an arithmetic number, because the mean of its divisors is an integer number (1586655).

Almost surely, 2^20264808 is an apocalyptic number.

It is an amenable number.

20264808 is an abundant number, since it is smaller than the sum of its proper divisors (30508152).

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

20264808 is a wasteful number, since it uses less digits than its factorization.

20264808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857 (or 1853 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 20264808 is about 4501.6450326520. The cubic root of 20264808 is about 272.6345120495.

The spelling of 20264808 in words is "twenty million, two hundred sixty-four thousand, eight hundred eight".