157314728 has 8 divisors (see below), whose sum is σ = 294965130. Its totient is φ = 78657360.

The previous prime is 157314721. The next prime is 157314757. The reversal of 157314728 is 827413751.

It can be written as a sum of positive squares in only one way, i.e., 137405284 + 19909444 = 11722^2 + 4462^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 157314691 and 157314700.

It is not an unprimeable number, because it can be changed into a prime (157314721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9832163 + ... + 9832178.

Almost surely, 2^157314728 is an apocalyptic number.

It is an amenable number.

157314728 is a deficient number, since it is larger than the sum of its proper divisors (137650402).

157314728 is a wasteful number, since it uses less digits than its factorization.

157314728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19664347 (or 19664343 counting only the distinct ones).

The product of its digits is 47040, while the sum is 38.

The square root of 157314728 is about 12542.5168128251. The cubic root of 157314728 is about 539.8293104783.

The spelling of 157314728 in words is "one hundred fifty-seven million, three hundred fourteen thousand, seven hundred twenty-eight".