157996 has 6 divisors (see below), whose sum is σ = 276500. Its totient is φ = 78996.

The previous prime is 157991. The next prime is 157999. The reversal of 157996 is 699751.

It is not an unprimeable number, because it can be changed into a prime (157991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19746 + ... + 19753.

2¹⁵⁷⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

157996 is a deficient number, since it is larger than the sum of its proper divisors (118504).

157996 is a wasteful number, since it uses less digits than its factorization.

157996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39503 (or 39501 counting only the distinct ones).

The product of its digits is 17010, while the sum is 37.

The square root of 157996 is about 397.4871067091. The cubic root of 157996 is about 54.0607455410.

The spelling of 157996 in words is "one hundred fifty-seven thousand, nine hundred ninety-six".