12157847 has 8 divisors (see below), whose sum is σ = 13122480. Its totient is φ = 11197440.

The previous prime is 12157841. The next prime is 12157861. The reversal of 12157847 is 74875121.

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

It is a cyclic number.

It is not a de Polignac number, because 12157847 - 2¹⁸ = 11895703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12157841) 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 7 ways as a sum of consecutive naturals, for example, 7604 + ... + 9062.

It is an arithmetic number, because the mean of its divisors is an integer number (1640310).

Almost surely, 2^12157847 is an apocalyptic number.

12157847 is a deficient number, since it is larger than the sum of its proper divisors (964633).

12157847 is a wasteful number, since it uses less digits than its factorization.

12157847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113.

The product of its digits is 15680, while the sum is 35.

The square root of 12157847 is about 3486.8104336198. The cubic root of 12157847 is about 229.9423106732.

The spelling of 12157847 in words is "twelve million, one hundred fifty-seven thousand, eight hundred forty-seven".