23128815 has 8 divisors (see below), whose sum is σ = 37006128. Its totient is φ = 12335360.

The previous prime is 23128813. The next prime is 23128837. The reversal of 23128815 is 51882132.

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

It is not a de Polignac number, because 23128815 - 2¹ = 23128813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23128813) 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, 770946 + ... + 770975.

It is an arithmetic number, because the mean of its divisors is an integer number (4625766).

Almost surely, 2^23128815 is an apocalyptic number.

23128815 is a deficient number, since it is larger than the sum of its proper divisors (13877313).

23128815 is a wasteful number, since it uses less digits than its factorization.

23128815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541929.

The product of its digits is 3840, while the sum is 30.

The square root of 23128815 is about 4809.2426638713. The cubic root of 23128815 is about 284.9166268900.

The spelling of 23128815 in words is "twenty-three million, one hundred twenty-eight thousand, eight hundred fifteen".