22715868 has 96 divisors (see below), whose sum is σ = 65443840. Its totient is φ = 5987520.

The previous prime is 22715867. The next prime is 22715909. The reversal of 22715868 is 86851722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22715863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68463 + ... + 68793.

Almost surely, 2^22715868 is an apocalyptic number.

22715868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22715868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32721920).

22715868 is an abundant number, since it is smaller than the sum of its proper divisors (42727972).

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

22715868 is a wasteful number, since it uses less digits than its factorization.

22715868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 405 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 22715868 is about 4766.1166582449. The cubic root of 22715868 is about 283.2107791390.

The spelling of 22715868 in words is "twenty-two million, seven hundred fifteen thousand, eight hundred sixty-eight".