156812 has 12 divisors (see below), whose sum is σ = 277200. Its totient is φ = 77616.

The previous prime is 156799. The next prime is 156817. The reversal of 156812 is 218651.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (156817) by changing a digit.

156812 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689 + ... + 887.

It is an arithmetic number, because the mean of its divisors is an integer number (23100).

2¹⁵⁶⁸¹² is an apocalyptic number.

It is an amenable number.

156812 is a deficient number, since it is larger than the sum of its proper divisors (120388).

156812 is a wasteful number, since it uses less digits than its factorization.

156812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 398 counting only the distinct ones).

The product of its digits is 480, while the sum is 23.

The square root of 156812 is about 395.9949494627. The cubic root of 156812 is about 53.9253655724.

The spelling of 156812 in words is "one hundred fifty-six thousand, eight hundred twelve".