23026815 has 72 divisors (see below), whose sum is σ = 48440880. Its totient is φ = 10348128.

The previous prime is 23026811. The next prime is 23026849. The reversal of 23026815 is 51862032.

It is not a de Polignac number, because 23026815 - 2² = 23026811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23026811) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 390256 + ... + 390314.

It is an arithmetic number, because the mean of its divisors is an integer number (672790).

Almost surely, 2^23026815 is an apocalyptic number.

23026815 is an abundant number, since it is smaller than the sum of its proper divisors (25414065).

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

23026815 is an equidigital number, since it uses as much as digits as its factorization.

23026815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 23026815 is about 4798.6263659510. The cubic root of 23026815 is about 284.4971743279.

Adding to 23026815 its reverse (51862032), we get a palindrome (74888847).

The spelling of 23026815 in words is "twenty-three million, twenty-six thousand, eight hundred fifteen".