22878424 has 8 divisors (see below), whose sum is σ = 42897060. Its totient is φ = 11439208.

The previous prime is 22878407. The next prime is 22878431. The reversal of 22878424 is 42487822.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 1429894 + ... + 1429909.

Almost surely, 2^22878424 is an apocalyptic number.

It is an amenable number.

22878424 is a deficient number, since it is larger than the sum of its proper divisors (20018636).

22878424 is a wasteful number, since it uses less digits than its factorization.

22878424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859809 (or 2859805 counting only the distinct ones).

The product of its digits is 57344, while the sum is 37.

The square root of 22878424 is about 4783.1395547276. The cubic root of 22878424 is about 283.8847313741.

The spelling of 22878424 in words is "twenty-two million, eight hundred seventy-eight thousand, four hundred twenty-four".