13157428 has 12 divisors (see below), whose sum is σ = 23123520. Its totient is φ = 6550712.

The previous prime is 13157399. The next prime is 13157437. The reversal of 13157428 is 82475131.

It is a super-3 number, since 3×13157428³ (a number of 22 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13157428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5926 + ... + 7837.

It is an arithmetic number, because the mean of its divisors is an integer number (1926960).

Almost surely, 2^13157428 is an apocalyptic number.

It is an amenable number.

13157428 is a deficient number, since it is larger than the sum of its proper divisors (9966092).

13157428 is a wasteful number, since it uses less digits than its factorization.

13157428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14006 (or 14004 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 13157428 is about 3627.3169147457. The cubic root of 13157428 is about 236.0788063925.

The spelling of 13157428 in words is "thirteen million, one hundred fifty-seven thousand, four hundred twenty-eight".