20882742 has 32 divisors (see below), whose sum is σ = 43055712. Its totient is φ = 6749184.

The previous prime is 20882731. The next prime is 20882759. The reversal of 20882742 is 24728802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30508 + ... + 31184.

It is an arithmetic number, because the mean of its divisors is an integer number (1345491).

Almost surely, 2^20882742 is an apocalyptic number.

20882742 is an abundant number, since it is smaller than the sum of its proper divisors (22172970).

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

20882742 is a wasteful number, since it uses less digits than its factorization.

20882742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832.

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 20882742 is about 4569.7638888678. The cubic root of 20882742 is about 275.3779574358.

The spelling of 20882742 in words is "twenty million, eight hundred eighty-two thousand, seven hundred forty-two".