12775215 has 16 divisors (see below), whose sum is σ = 20623968. Its totient is φ = 6752256.

The previous prime is 12775207. The next prime is 12775229. The reversal of 12775215 is 51257721.

It is not a de Polignac number, because 12775215 - 2³ = 12775207 is a prime.

It is a super-2 number, since 2×12775215² = 326412236592450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2074 + ... + 5463.

It is an arithmetic number, because the mean of its divisors is an integer number (1288998).

Almost surely, 2^12775215 is an apocalyptic number.

12775215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12775215 is a deficient number, since it is larger than the sum of its proper divisors (7848753).

12775215 is a wasteful number, since it uses less digits than its factorization.

12775215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658.

The product of its digits is 4900, while the sum is 30.

The square root of 12775215 is about 3574.2432765552. The cubic root of 12775215 is about 233.7703386270.

The spelling of 12775215 in words is "twelve million, seven hundred seventy-five thousand, two hundred fifteen".