15320115 has 12 divisors (see below), whose sum is σ = 26554944. Its totient is φ = 8170704.

The previous prime is 15320069. The next prime is 15320119. The reversal of 15320115 is 51102351.

15320115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15320115 - 2⁶ = 15320051 is a prime.

It is a super-2 number, since 2×15320115² = 469411847226450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15320119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170179 + ... + 170268.

It is an arithmetic number, because the mean of its divisors is an integer number (2212912).

Almost surely, 2^15320115 is an apocalyptic number.

15320115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15320115 is a deficient number, since it is larger than the sum of its proper divisors (11234829).

15320115 is a wasteful number, since it uses less digits than its factorization.

15320115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340458 (or 340455 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 15320115 is about 3914.0918486924. The cubic root of 15320115 is about 248.3632543061.

Adding to 15320115 its reverse (51102351), we get a palindrome (66422466).

The spelling of 15320115 in words is "fifteen million, three hundred twenty thousand, one hundred fifteen".