22897878 has 32 divisors (see below), whose sum is σ = 50168160. Its totient is φ = 6935040.

The previous prime is 22897877. The next prime is 22897879. The reversal of 22897878 is 87879822.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22897877) and next prime (22897879).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 22897878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22897877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 913 + ... + 6828.

It is an arithmetic number, because the mean of its divisors is an integer number (1567755).

Almost surely, 2^22897878 is an apocalyptic number.

22897878 is an abundant number, since it is smaller than the sum of its proper divisors (27270282).

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

22897878 is a wasteful number, since it uses less digits than its factorization.

22897878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7792.

The product of its digits is 903168, while the sum is 51.

The square root of 22897878 is about 4785.1727241553. The cubic root of 22897878 is about 283.9651729428.

The spelling of 22897878 in words is "twenty-two million, eight hundred ninety-seven thousand, eight hundred seventy-eight".