20652764 has 36 divisors (see below), whose sum is σ = 40353264. Its totient is φ = 9240000.

The previous prime is 20652763. The next prime is 20652799. The reversal of 20652764 is 46725602.

It is a self number, because there is not a number n which added to its sum of digits gives 20652764.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20652761) 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 11 ways as a sum of consecutive naturals, for example, 34064 + ... + 34664.

It is an arithmetic number, because the mean of its divisors is an integer number (1120924).

Almost surely, 2^20652764 is an apocalyptic number.

It is an amenable number.

20652764 is a deficient number, since it is larger than the sum of its proper divisors (19700500).

20652764 is a wasteful number, since it uses less digits than its factorization.

20652764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 20652764 is about 4544.5312189488. The cubic root of 20652764 is about 274.3633271290.

The spelling of 20652764 in words is "twenty million, six hundred fifty-two thousand, seven hundred sixty-four".