20882631 has 16 divisors (see below), whose sum is σ = 34714368. Its totient is φ = 10848000.

The previous prime is 20882573. The next prime is 20882633. The reversal of 20882631 is 13628802.

It is not a de Polignac number, because 20882631 - 2⁶ = 20882567 is a prime.

It is a super-2 number, since 2×20882631² = 872168554964322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20882633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44970 + ... + 45431.

It is an arithmetic number, because the mean of its divisors is an integer number (2169648).

Almost surely, 2^20882631 is an apocalyptic number.

20882631 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20882631 is a deficient number, since it is larger than the sum of its proper divisors (13831737).

20882631 is a wasteful number, since it uses less digits than its factorization.

20882631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90422.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 20882631 is about 4569.7517438040. The cubic root of 20882631 is about 275.3774695209.

The spelling of 20882631 in words is "twenty million, eight hundred eighty-two thousand, six hundred thirty-one".