12157650 has 36 divisors (see below), whose sum is σ = 32664762. Its totient is φ = 3241920.

The previous prime is 12157637. The next prime is 12157657. The reversal of 12157650 is 5675121.

12157650 is a `hidden beast` number, since 1 + 2 + 1 + 5 + 7 + 650 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 11634921 + 522729 = 3411^2 + 723^2 .

It is a hoax number, since the sum of its digits (27) 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 (12157657) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 13059 + ... + 13958.

Almost surely, 2^12157650 is an apocalyptic number.

12157650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12157650 is an abundant number, since it is smaller than the sum of its proper divisors (20507112).

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

12157650 is a wasteful number, since it uses less digits than its factorization.

12157650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27035 (or 27027 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 12157650 is about 3486.7821841922. The cubic root of 12157650 is about 229.9410687077.

The spelling of 12157650 in words is "twelve million, one hundred fifty-seven thousand, six hundred fifty".