12157000 has 32 divisors (see below), whose sum is σ = 28449720. Its totient is φ = 4862400.

The previous prime is 12156983. The next prime is 12157001. The reversal of 12157000 is 75121.

It can be written as a sum of positive squares in 4 ways, for example, as 988036 + 11168964 = 994^2 + 3342^2 .

It is not an unprimeable number, because it can be changed into a prime (12157001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5079 + ... + 7078.

Almost surely, 2^12157000 is an apocalyptic number.

12157000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12157000 is an abundant number, since it is smaller than the sum of its proper divisors (16292720).

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

12157000 is a wasteful number, since it uses less digits than its factorization.

12157000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12178 (or 12164 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 12157000 is about 3486.6889737973. The cubic root of 12157000 is about 229.9369707568.

It can be divided in two parts, 121 and 57000, that added together give a square (57121 = 239²).

The spelling of 12157000 in words is "twelve million, one hundred fifty-seven thousand".