23978330 has 24 divisors (see below), whose sum is σ = 45854748. Its totient is φ = 9026048.

The previous prime is 23978329. The next prime is 23978377. The reversal of 23978330 is 3387932.

It can be written as a sum of positive squares in 6 ways, for example, as 22915369 + 1062961 = 4787^2 + 1031^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1259 + ... + 7038.

Almost surely, 2^23978330 is an apocalyptic number.

23978330 is a deficient number, since it is larger than the sum of its proper divisors (21876418).

23978330 is a wasteful number, since it uses less digits than its factorization.

23978330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8338 (or 8321 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 23978330 is about 4896.7673009854. The cubic root of 23978330 is about 288.3630725077.

The spelling of 23978330 in words is "twenty-three million, nine hundred seventy-eight thousand, three hundred thirty".