157816 has 8 divisors (see below), whose sum is σ = 295920. Its totient is φ = 78904.

The previous prime is 157813. The next prime is 157823. The reversal of 157816 is 618751.

It is a happy number.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9856 + ... + 9871.

It is an arithmetic number, because the mean of its divisors is an integer number (36990).

2¹⁵⁷⁸¹⁶ is an apocalyptic number.

It is an amenable number.

157816 is a deficient number, since it is larger than the sum of its proper divisors (138104).

157816 is a wasteful number, since it uses less digits than its factorization.

157816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19733 (or 19729 counting only the distinct ones).

The product of its digits is 1680, while the sum is 28.

The square root of 157816 is about 397.2606197448. The cubic root of 157816 is about 54.0402078229.

The spelling of 157816 in words is "one hundred fifty-seven thousand, eight hundred sixteen".