20764834 has 16 divisors (see below), whose sum is σ = 33206400. Its totient is φ = 9710064.

The previous prime is 20764813. The next prime is 20764847. The reversal of 20764834 is 43846702.

It is a self number, because there is not a number n which added to its sum of digits gives 20764834.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457 + ... + 6460.

It is an arithmetic number, because the mean of its divisors is an integer number (2075400).

Almost surely, 2^20764834 is an apocalyptic number.

20764834 is a deficient number, since it is larger than the sum of its proper divisors (12441566).

20764834 is a wasteful number, since it uses less digits than its factorization.

20764834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7017.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 20764834 is about 4556.8447417045. The cubic root of 20764834 is about 274.8586998616.

The spelling of 20764834 in words is "twenty million, seven hundred sixty-four thousand, eight hundred thirty-four".