23013858 has 32 divisors (see below), whose sum is σ = 53830656. Its totient is φ = 6421968.

The previous prime is 23013857. The next prime is 23013871. The reversal of 23013858 is 85831032.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23013853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4566 + ... + 8177.

It is an arithmetic number, because the mean of its divisors is an integer number (1682208).

Almost surely, 2^23013858 is an apocalyptic number.

23013858 is an abundant number, since it is smaller than the sum of its proper divisors (30816798).

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

23013858 is a wasteful number, since it uses less digits than its factorization.

23013858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12798.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 23013858 is about 4797.2761021230. The cubic root of 23013858 is about 284.4438029070.

It can be divided in two parts, 23013 and 858, that added together give a triangular number (23871 = T₂₁₈).

The spelling of 23013858 in words is "twenty-three million, thirteen thousand, eight hundred fifty-eight".