157672 has 8 divisors (see below), whose sum is σ = 295650. Its totient is φ = 78832.

The previous prime is 157669. The next prime is 157679. The reversal of 157672 is 276751.

It can be written as a sum of positive squares in only one way, i.e., 133956 + 23716 = 366^2 + 154^2 .

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

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 157672.

It is not an unprimeable number, because it can be changed into a prime (157679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9847 + ... + 9862.

2¹⁵⁷⁶⁷² is an apocalyptic number.

It is an amenable number.

157672 is a deficient number, since it is larger than the sum of its proper divisors (137978).

157672 is a wasteful number, since it uses less digits than its factorization.

157672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19715 (or 19711 counting only the distinct ones).

The product of its digits is 2940, while the sum is 28.

The square root of 157672 is about 397.0793371607. The cubic root of 157672 is about 54.0237664017.

The spelling of 157672 in words is "one hundred fifty-seven thousand, six hundred seventy-two".