12157266 has 32 divisors (see below), whose sum is σ = 26707968. Its totient is φ = 3658640.

The previous prime is 12157247. The next prime is 12157273. The reversal of 12157266 is 66275121.

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, 10471 + ... + 11573.

It is an arithmetic number, because the mean of its divisors is an integer number (834624).

Almost surely, 2^12157266 is an apocalyptic number.

12157266 is an abundant number, since it is smaller than the sum of its proper divisors (14550702).

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

12157266 is a wasteful number, since it uses less digits than its factorization.

12157266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286.

The product of its digits is 5040, while the sum is 30.

The square root of 12157266 is about 3486.7271186601. The cubic root of 12157266 is about 229.9386477820.

The spelling of 12157266 in words is "twelve million, one hundred fifty-seven thousand, two hundred sixty-six".