20902616 has 24 divisors (see below), whose sum is σ = 45592020. Its totient is φ = 8958096.

The previous prime is 20902589. The next prime is 20902633. The reversal of 20902616 is 61620902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26270 + ... + 27053.

Almost surely, 2^20902616 is an apocalyptic number.

It is an amenable number.

20902616 is an abundant number, since it is smaller than the sum of its proper divisors (24689404).

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

20902616 is a wasteful number, since it uses less digits than its factorization.

20902616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53343 (or 53332 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20902616 is about 4571.9378823427. The cubic root of 20902616 is about 275.4652883409.

The spelling of 20902616 in words is "twenty million, nine hundred two thousand, six hundred sixteen".