156870 has 64 divisors (see below), whose sum is σ = 483840. Its totient is φ = 35424.

The previous prime is 156841. The next prime is 156887. The reversal of 156870 is 78651.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1849 + ... + 1931.

It is an arithmetic number, because the mean of its divisors is an integer number (7560).

2¹⁵⁶⁸⁷⁰ is an apocalyptic number.

156870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 156870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241920).

156870 is an abundant number, since it is smaller than the sum of its proper divisors (326970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156870 is a wasteful number, since it uses less digits than its factorization.

156870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 156870 is about 396.0681759495. The cubic root of 156870 is about 53.9320132050.

The spelling of 156870 in words is "one hundred fifty-six thousand, eight hundred seventy".