20902368 has 24 divisors (see below), whose sum is σ = 54868968. Its totient is φ = 6967424.

The previous prime is 20902313. The next prime is 20902381. The reversal of 20902368 is 86320902.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108771 + ... + 108962.

It is an arithmetic number, because the mean of its divisors is an integer number (2286207).

Almost surely, 2^20902368 is an apocalyptic number.

It is an amenable number.

20902368 is an abundant number, since it is smaller than the sum of its proper divisors (33966600).

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

20902368 is a wasteful number, since it uses less digits than its factorization.

20902368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217746 (or 217738 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 20902368 is about 4571.9107602839. The cubic root of 20902368 is about 275.4641989133.

The spelling of 20902368 in words is "twenty million, nine hundred two thousand, three hundred sixty-eight".