23328890 has 16 divisors (see below), whose sum is σ = 45222408. Its totient is φ = 8613696.

The previous prime is 23328881. The next prime is 23328971. The reversal of 23328890 is 9882332.

It can be written as a sum of positive squares in 4 ways, for example, as 20529961 + 2798929 = 4531^2 + 1673^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23328890.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89597 + ... + 89856.

Almost surely, 2^23328890 is an apocalyptic number.

23328890 is a deficient number, since it is larger than the sum of its proper divisors (21893518).

23328890 is a wasteful number, since it uses less digits than its factorization.

23328890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179473.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 23328890 is about 4829.9989648032. The cubic root of 23328890 is about 285.7358230193.

The spelling of 23328890 in words is "twenty-three million, three hundred twenty-eight thousand, eight hundred ninety".