20258884 has 12 divisors (see below), whose sum is σ = 35606844. Its totient is φ = 10085504.

The previous prime is 20258873. The next prime is 20258897. The reversal of 20258884 is 48885202.

It can be written as a sum of positive squares in 2 ways, for example, as 2433600 + 17825284 = 1560^2 + 4222^2 .

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, 9937 + ... + 11800.

It is an arithmetic number, because the mean of its divisors is an integer number (2967237).

Almost surely, 2^20258884 is an apocalyptic number.

It is an amenable number.

20258884 is a deficient number, since it is larger than the sum of its proper divisors (15347960).

20258884 is a wasteful number, since it uses less digits than its factorization.

20258884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21974 (or 21972 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 37.

The square root of 20258884 is about 4500.9870028695. The cubic root of 20258884 is about 272.6079430956.

The spelling of 20258884 in words is "twenty million, two hundred fifty-eight thousand, eight hundred eighty-four".