23990555 has 8 divisors (see below), whose sum is σ = 28940544. Its totient is φ = 19091200.

The previous prime is 23990543. The next prime is 23990557. The reversal of 23990555 is 55509932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23990555 - 2⁸ = 23990299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23990557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11606 + ... + 13515.

It is an arithmetic number, because the mean of its divisors is an integer number (3617568).

Almost surely, 2^23990555 is an apocalyptic number.

23990555 is a deficient number, since it is larger than the sum of its proper divisors (4949989).

23990555 is a wasteful number, since it uses less digits than its factorization.

23990555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25317.

The product of its (nonzero) digits is 60750, while the sum is 38.

The square root of 23990555 is about 4898.0154144306. The cubic root of 23990555 is about 288.4120700767.

The spelling of 23990555 in words is "twenty-three million, nine hundred ninety thousand, five hundred fifty-five".