22978324 has 24 divisors (see below), whose sum is σ = 41990760. Its totient is φ = 10988544.

The previous prime is 22978321. The next prime is 22978337. The reversal of 22978324 is 42387922.

It can be written as a sum of positive squares in 4 ways, for example, as 1188100 + 21790224 = 1090^2 + 4668^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22978321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12232 + ... + 13984.

It is an arithmetic number, because the mean of its divisors is an integer number (1749615).

Almost surely, 2^22978324 is an apocalyptic number.

It is an amenable number.

22978324 is a deficient number, since it is larger than the sum of its proper divisors (19012436).

22978324 is a wasteful number, since it uses less digits than its factorization.

22978324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899 (or 1897 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 22978324 is about 4793.5711113949. The cubic root of 22978324 is about 284.2973312665.

It can be divided in two parts, 2297832 and 4, that multiplied together give a triangular number (9191328 = T₄₂₈₇).

The spelling of 22978324 in words is "twenty-two million, nine hundred seventy-eight thousand, three hundred twenty-four".