20442875860 has 24 divisors (see below), whose sum is σ = 46832770656. Its totient is φ = 7433772960.

The previous prime is 20442875857. The next prime is 20442875861. The reversal of 20442875860 is 6857824402.

It is a super-2 number, since 2×20442875860² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20442875860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442875861) 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, 46460862 + ... + 46461301.

It is an arithmetic number, because the mean of its divisors is an integer number (1951365444).

Almost surely, 2^20442875860 is an apocalyptic number.

20442875860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20442875860 is an abundant number, since it is smaller than the sum of its proper divisors (26389894796).

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

20442875860 is a wasteful number, since it uses less digits than its factorization.

20442875860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92922183 (or 92922181 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 46.

The spelling of 20442875860 in words is "twenty billion, four hundred forty-two million, eight hundred seventy-five thousand, eight hundred sixty".