12867155 has 24 divisors (see below), whose sum is σ = 18591120. Its totient is φ = 8514240.

The previous prime is 12867131. The next prime is 12867187. The reversal of 12867155 is 55176821.

It is not a de Polignac number, because 12867155 - 2⁸ = 12866899 is a prime.

It is a super-3 number, since 3×12867155³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

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 23 ways as a sum of consecutive naturals, for example, 6200 + ... + 8010.

It is an arithmetic number, because the mean of its divisors is an integer number (774630).

Almost surely, 2^12867155 is an apocalyptic number.

12867155 is a deficient number, since it is larger than the sum of its proper divisors (5723965).

12867155 is a wasteful number, since it uses less digits than its factorization.

12867155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859 (or 1852 counting only the distinct ones).

The product of its digits is 16800, while the sum is 35.

The square root of 12867155 is about 3587.0816829283. The cubic root of 12867155 is about 234.3297940665.

The spelling of 12867155 in words is "twelve million, eight hundred sixty-seven thousand, one hundred fifty-five".