157628131 has 8 divisors (see below), whose sum is σ = 174157344. Its totient is φ = 141905280.

The previous prime is 157628113. The next prime is 157628189. The reversal of 157628131 is 131826751.

It is a happy number.

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 157628131 - 2²⁵ = 124073699 is a prime.

It is a super-2 number, since 2×157628131² = 49693255365106322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157628531) 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, 201180 + ... + 201961.

It is an arithmetic number, because the mean of its divisors is an integer number (21769668).

Almost surely, 2^157628131 is an apocalyptic number.

157628131 is a deficient number, since it is larger than the sum of its proper divisors (16529213).

157628131 is a wasteful number, since it uses less digits than its factorization.

157628131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403181.

The product of its digits is 10080, while the sum is 34.

The square root of 157628131 is about 12555.0042214250. The cubic root of 157628131 is about 540.1875560199.

The spelling of 157628131 in words is "one hundred fifty-seven million, six hundred twenty-eight thousand, one hundred thirty-one".