23997550 has 12 divisors (see below), whose sum is σ = 44635536. Its totient is φ = 9599000.

The previous prime is 23997511. The next prime is 23997553. The reversal of 23997550 is 5579932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23997553) 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, 239926 + ... + 240025.

It is an arithmetic number, because the mean of its divisors is an integer number (3719628).

Almost surely, 2^23997550 is an apocalyptic number.

23997550 is a deficient number, since it is larger than the sum of its proper divisors (20637986).

23997550 is a wasteful number, since it uses less digits than its factorization.

23997550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479963 (or 479958 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 40.

The square root of 23997550 is about 4898.7294271066. The cubic root of 23997550 is about 288.4400984179.

The spelling of 23997550 in words is "twenty-three million, nine hundred ninety-seven thousand, five hundred fifty".