23015239 has 8 divisors (see below), whose sum is σ = 25192832. Its totient is φ = 20895840.

The previous prime is 23015233. The next prime is 23015243. The reversal of 23015239 is 93251032.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23015239 - 2⁵ = 23015207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23015233) 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, 13719 + ... + 15304.

It is an arithmetic number, because the mean of its divisors is an integer number (3149104).

Almost surely, 2^23015239 is an apocalyptic number.

23015239 is a deficient number, since it is larger than the sum of its proper divisors (2177593).

23015239 is a wasteful number, since it uses less digits than its factorization.

23015239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29097.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 23015239 is about 4797.4200358109. The cubic root of 23015239 is about 284.4494923635.

The spelling of 23015239 in words is "twenty-three million, fifteen thousand, two hundred thirty-nine".