12155276 has 12 divisors (see below), whose sum is σ = 24310608. Its totient is φ = 5209392.

The previous prime is 12155257. The next prime is 12155279. The reversal of 12155276 is 67255121.

12155276 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12155279) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 217031 + ... + 217086.

It is an arithmetic number, because the mean of its divisors is an integer number (2025884).

Almost surely, 2^12155276 is an apocalyptic number.

It is an amenable number.

12155276 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12155276 is a wasteful number, since it uses less digits than its factorization.

12155276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434128 (or 434126 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 12155276 is about 3486.4417390801. The cubic root of 12155276 is about 229.9261010225.

The spelling of 12155276 in words is "twelve million, one hundred fifty-five thousand, two hundred seventy-six".