20916902 has 16 divisors (see below), whose sum is σ = 33359040. Its totient is φ = 9802368.

The previous prime is 20916893. The next prime is 20916923. The reversal of 20916902 is 20961902.

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, 8003 + ... + 10289.

It is an arithmetic number, because the mean of its divisors is an integer number (2084940).

Almost surely, 2^20916902 is an apocalyptic number.

It is a pronic number, being equal to 4573×4574.

20916902 is a deficient number, since it is larger than the sum of its proper divisors (12442138).

20916902 is a wasteful number, since it uses less digits than its factorization.

20916902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 20916902 is about 4573.4999726686. The cubic root of 20916902 is about 275.5280301036.

The spelling of 20916902 in words is "twenty million, nine hundred sixteen thousand, nine hundred two".