12739215 has 16 divisors (see below), whose sum is σ = 21456000. Its totient is φ = 6436512.

The previous prime is 12739189. The next prime is 12739229. The reversal of 12739215 is 51293721.

It is not a de Polignac number, because 12739215 - 2⁵ = 12739183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22065 + ... + 22634.

It is an arithmetic number, because the mean of its divisors is an integer number (1341000).

Almost surely, 2^12739215 is an apocalyptic number.

12739215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12739215 is a deficient number, since it is larger than the sum of its proper divisors (8716785).

12739215 is a wasteful number, since it uses less digits than its factorization.

12739215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44726.

The product of its digits is 3780, while the sum is 30.

The square root of 12739215 is about 3569.2036927023. The cubic root of 12739215 is about 233.5505471624.

The spelling of 12739215 in words is "twelve million, seven hundred thirty-nine thousand, two hundred fifteen".