20652988 has 24 divisors (see below), whose sum is σ = 39019680. Its totient is φ = 9535680.

The previous prime is 20652967. The next prime is 20653001. The reversal of 20652988 is 88925602.

It is a self number, because there is not a number n which added to its sum of digits gives 20652988.

It is a congruent number.

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, 1203 + ... + 6538.

It is an arithmetic number, because the mean of its divisors is an integer number (1625820).

Almost surely, 2^20652988 is an apocalyptic number.

It is an amenable number.

20652988 is a deficient number, since it is larger than the sum of its proper divisors (18366692).

20652988 is a wasteful number, since it uses less digits than its factorization.

20652988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7797 (or 7795 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 20652988 is about 4544.5558638881. Note that the first 3 decimals coincide. The cubic root of 20652988 is about 274.3643190408.

The spelling of 20652988 in words is "twenty million, six hundred fifty-two thousand, nine hundred eighty-eight".