20313916 has 24 divisors (see below), whose sum is σ = 40895456. Its totient is φ = 8648640.

The previous prime is 20313913. The next prime is 20313941. The reversal of 20313916 is 61931302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313913) 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, 2086 + ... + 6706.

Almost surely, 2^20313916 is an apocalyptic number.

It is an amenable number.

20313916 is an abundant number, since it is smaller than the sum of its proper divisors (20581540).

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

20313916 is a wasteful number, since it uses less digits than its factorization.

20313916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4789 (or 4787 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 20313916 is about 4507.0961826879. The cubic root of 20313916 is about 272.8545607711.

The spelling of 20313916 in words is "twenty million, three hundred thirteen thousand, nine hundred sixteen".