12292155 has 48 divisors (see below), whose sum is σ = 22573824. Its totient is φ = 6415200.

The previous prime is 12292141. The next prime is 12292193. The reversal of 12292155 is 55129221.

It is not a de Polignac number, because 12292155 - 2⁸ = 12291899 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 47 ways as a sum of consecutive naturals, for example, 81330 + ... + 81480.

It is an arithmetic number, because the mean of its divisors is an integer number (470288).

Almost surely, 2^12292155 is an apocalyptic number.

12292155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12292155 is a deficient number, since it is larger than the sum of its proper divisors (10281669).

12292155 is an equidigital number, since it uses as much as digits as its factorization.

12292155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 226 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 12292155 is about 3506.0169708659. The cubic root of 12292155 is about 230.7859376366.

The spelling of 12292155 in words is "twelve million, two hundred ninety-two thousand, one hundred fifty-five".