22978156 has 12 divisors (see below), whose sum is σ = 40778640. Its totient is φ = 11327120.

The previous prime is 22978141. The next prime is 22978183. The reversal of 22978156 is 65187922.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40171 + ... + 40738.

It is an arithmetic number, because the mean of its divisors is an integer number (3398220).

Almost surely, 2^22978156 is an apocalyptic number.

It is an amenable number.

22978156 is a deficient number, since it is larger than the sum of its proper divisors (17800484).

22978156 is a wasteful number, since it uses less digits than its factorization.

22978156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80984 (or 80982 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 22978156 is about 4793.5535878928. The cubic root of 22978156 is about 284.2966384097.

The spelling of 22978156 in words is "twenty-two million, nine hundred seventy-eight thousand, one hundred fifty-six".