20652404 has 24 divisors (see below), whose sum is σ = 37450728. Its totient is φ = 9959040.

The previous prime is 20652403. The next prime is 20652407. The reversal of 20652404 is 40425602.

It can be written as a sum of positive squares in 4 ways, for example, as 40804 + 20611600 = 202^2 + 4540^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20652404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20652403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12134 + ... + 13730.

It is an arithmetic number, because the mean of its divisors is an integer number (1560447).

Almost surely, 2^20652404 is an apocalyptic number.

It is an amenable number.

20652404 is a deficient number, since it is larger than the sum of its proper divisors (16798324).

20652404 is a wasteful number, since it uses less digits than its factorization.

20652404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715 (or 1713 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 20652404 is about 4544.4916107305. The cubic root of 20652404 is about 274.3617329700.

The spelling of 20652404 in words is "twenty million, six hundred fifty-two thousand, four hundred four".