23990158 has 4 divisors (see below), whose sum is σ = 35985240. Its totient is φ = 11995078.

The previous prime is 23990143. The next prime is 23990159. The reversal of 23990158 is 85109932.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23990159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5997538 + ... + 5997541.

It is an arithmetic number, because the mean of its divisors is an integer number (8996310).

Almost surely, 2^23990158 is an apocalyptic number.

23990158 is a deficient number, since it is larger than the sum of its proper divisors (11995082).

23990158 is a wasteful number, since it uses less digits than its factorization.

23990158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11995081.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 23990158 is about 4897.9748876449. The cubic root of 23990158 is about 288.4104791697.

The spelling of 23990158 in words is "twenty-three million, nine hundred ninety thousand, one hundred fifty-eight".