23978450 has 12 divisors (see below), whose sum is σ = 44600010. Its totient is φ = 9591360.

The previous prime is 23978417. The next prime is 23978459. The reversal of 23978450 is 5487932.

It can be written as a sum of positive squares in 3 ways, for example, as 19722481 + 4255969 = 4441^2 + 2063^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23978459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 239735 + ... + 239834.

Almost surely, 2^23978450 is an apocalyptic number.

23978450 is a deficient number, since it is larger than the sum of its proper divisors (20621560).

23978450 is a wasteful number, since it uses less digits than its factorization.

23978450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479581 (or 479576 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 23978450 is about 4896.7795539518. The cubic root of 23978450 is about 288.3635535464.

The spelling of 23978450 in words is "twenty-three million, nine hundred seventy-eight thousand, four hundred fifty".