12157546 has 8 divisors (see below), whose sum is σ = 18295524. Its totient is φ = 6059040.

The previous prime is 12157469. The next prime is 12157553. The reversal of 12157546 is 64575121.

It can be written as a sum of positive squares in 2 ways, for example, as 12145225 + 12321 = 3485^2 + 111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9085 + ... + 10336.

Almost surely, 2^12157546 is an apocalyptic number.

12157546 is a deficient number, since it is larger than the sum of its proper divisors (6137978).

12157546 is a wasteful number, since it uses less digits than its factorization.

12157546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19736.

The product of its digits is 8400, while the sum is 31.

The square root of 12157546 is about 3486.7672706965. The cubic root of 12157546 is about 229.9404130453.

The spelling of 12157546 in words is "twelve million, one hundred fifty-seven thousand, five hundred forty-six".