23309966 has 4 divisors (see below), whose sum is σ = 34964952. Its totient is φ = 11654982.

The previous prime is 23309959. The next prime is 23309981. The reversal of 23309966 is 66990332.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5827490 + ... + 5827493.

It is an arithmetic number, because the mean of its divisors is an integer number (8741238).

Almost surely, 2^23309966 is an apocalyptic number.

23309966 is a deficient number, since it is larger than the sum of its proper divisors (11654986).

23309966 is a wasteful number, since it uses less digits than its factorization.

23309966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11654985.

The product of its (nonzero) digits is 52488, while the sum is 38.

The square root of 23309966 is about 4828.0395607327. The cubic root of 23309966 is about 285.6585407673.

The spelling of 23309966 in words is "twenty-three million, three hundred nine thousand, nine hundred sixty-six".