12946155 has 16 divisors (see below), whose sum is σ = 20781600. Its totient is φ = 6882048.

The previous prime is 12946147. The next prime is 12946169. The reversal of 12946155 is 55164921.

It is not a de Polignac number, because 12946155 - 2³ = 12946147 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3999 + ... + 6471.

It is an arithmetic number, because the mean of its divisors is an integer number (1298850).

Almost surely, 2^12946155 is an apocalyptic number.

12946155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12946155 is a deficient number, since it is larger than the sum of its proper divisors (7835445).

12946155 is a wasteful number, since it uses less digits than its factorization.

12946155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830.

The product of its digits is 10800, while the sum is 33.

The square root of 12946155 is about 3598.0765695021. The cubic root of 12946155 is about 234.8083846201.

The spelling of 12946155 in words is "twelve million, nine hundred forty-six thousand, one hundred fifty-five".