157205228 has 6 divisors (see below), whose sum is σ = 275109156. Its totient is φ = 78602612.

The previous prime is 157205131. The next prime is 157205231. The reversal of 157205228 is 822502751.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 157205194 and 157205203.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19650650 + ... + 19650657.

It is an arithmetic number, because the mean of its divisors is an integer number (45851526).

Almost surely, 2^157205228 is an apocalyptic number.

It is an amenable number.

157205228 is a deficient number, since it is larger than the sum of its proper divisors (117903928).

157205228 is a wasteful number, since it uses less digits than its factorization.

157205228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39301311 (or 39301309 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 157205228 is about 12538.1509003521. The cubic root of 157205228 is about 539.7040307699.

Adding to 157205228 its reverse (822502751), we get a palindrome (979707979).

The spelling of 157205228 in words is "one hundred fifty-seven million, two hundred five thousand, two hundred twenty-eight".