20315892 has 24 divisors (see below), whose sum is σ = 49039200. Its totient is φ = 6538336.

The previous prime is 20315887. The next prime is 20315917. The reversal of 20315892 is 29851302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28842 + ... + 29537.

It is an arithmetic number, because the mean of its divisors is an integer number (2043300).

Almost surely, 2^20315892 is an apocalyptic number.

It is an amenable number.

20315892 is an abundant number, since it is smaller than the sum of its proper divisors (28723308).

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

20315892 is a wasteful number, since it uses less digits than its factorization.

20315892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58415 (or 58413 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20315892 is about 4507.3153872344. The cubic root of 20315892 is about 272.8634076314.

The spelling of 20315892 in words is "twenty million, three hundred fifteen thousand, eight hundred ninety-two".