22989878 has 4 divisors (see below), whose sum is σ = 34484820. Its totient is φ = 11494938.

The previous prime is 22989859. The next prime is 22989919. The reversal of 22989878 is 87898922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87898922 = 2 ⋅43949461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5747468 + ... + 5747471.

It is an arithmetic number, because the mean of its divisors is an integer number (8621205).

Almost surely, 2^22989878 is an apocalyptic number.

22989878 is a deficient number, since it is larger than the sum of its proper divisors (11494942).

22989878 is a wasteful number, since it uses less digits than its factorization.

22989878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11494941.

The product of its digits is 1161216, while the sum is 53.

The square root of 22989878 is about 4794.7761157326. The cubic root of 22989878 is about 284.3449735716.

The spelling of 22989878 in words is "twenty-two million, nine hundred eighty-nine thousand, eight hundred seventy-eight".