23328666 has 12 divisors (see below), whose sum is σ = 50545482. Its totient is φ = 7776216.

The previous prime is 23328653. The next prime is 23328689. The reversal of 23328666 is 66682332.

It can be written as a sum of positive squares in only one way, i.e., 19105641 + 4223025 = 4371^2 + 2055^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 23328666.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 648001 + ... + 648036.

Almost surely, 2^23328666 is an apocalyptic number.

23328666 is an abundant number, since it is smaller than the sum of its proper divisors (27216816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23328666 is a wasteful number, since it uses less digits than its factorization.

23328666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296045 (or 1296042 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 23328666 is about 4829.9757763368. The cubic root of 23328666 is about 285.7349084876.

The spelling of 23328666 in words is "twenty-three million, three hundred twenty-eight thousand, six hundred sixty-six".