13023915 has 16 divisors (see below), whose sum is σ = 20901888. Its totient is φ = 6924896.

The previous prime is 13023893. The next prime is 13023919. The reversal of 13023915 is 51932031.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13023915 - 2⁶ = 13023851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13023919) 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, 4612 + ... + 6878.

It is an arithmetic number, because the mean of its divisors is an integer number (1306368).

Almost surely, 2^13023915 is an apocalyptic number.

13023915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13023915 is a deficient number, since it is larger than the sum of its proper divisors (7877973).

13023915 is a wasteful number, since it uses less digits than its factorization.

13023915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 13023915 is about 3608.8661654320. The cubic root of 13023915 is about 235.2775654962.

Adding to 13023915 its reverse (51932031), we get a palindrome (64955946).

The spelling of 13023915 in words is "thirteen million, twenty-three thousand, nine hundred fifteen".