156880 has 40 divisors (see below), whose sum is σ = 381672. Its totient is φ = 59904.

The previous prime is 156841. The next prime is 156887. The reversal of 156880 is 88651.

156880 = T₂₄₈ + T₂₄₉ + ... + T₂₅₂.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 59536 + 97344 = 244^2 + 312^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×156880² = 49222668800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156887) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2934 + ... + 2986.

2¹⁵⁶⁸⁸⁰ is an apocalyptic number.

156880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190836).

156880 is an abundant number, since it is smaller than the sum of its proper divisors (224792).

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

156880 is a wasteful number, since it uses less digits than its factorization.

156880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 156880 is about 396.0807998376. The cubic root of 156880 is about 53.9331591829.

The spelling of 156880 in words is "one hundred fifty-six thousand, eight hundred eighty".