12958157 has 8 divisors (see below), whose sum is σ = 13590840. Its totient is φ = 12337920.

The previous prime is 12958123. The next prime is 12958159. The reversal of 12958157 is 75185921.

It can be written as a sum of positive squares in 4 ways, for example, as 609961 + 12348196 = 781^2 + 3514^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12958157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12958157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12958159) 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, 944 + ... + 5177.

It is an arithmetic number, because the mean of its divisors is an integer number (1698855).

Almost surely, 2^12958157 is an apocalyptic number.

It is an amenable number.

12958157 is a deficient number, since it is larger than the sum of its proper divisors (632683).

12958157 is an equidigital number, since it uses as much as digits as its factorization.

12958157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6223.

The product of its digits is 25200, while the sum is 38.

The square root of 12958157 is about 3599.7440186769. The cubic root of 12958157 is about 234.8809235271.

The spelling of 12958157 in words is "twelve million, nine hundred fifty-eight thousand, one hundred fifty-seven".