156355980 has 96 divisors (see below), whose sum is σ = 480066048. Its totient is φ = 37708800.

The previous prime is 156355943. The next prime is 156356003. The reversal of 156355980 is 89553651.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158569 + ... + 159551.

It is an arithmetic number, because the mean of its divisors is an integer number (5000688).

Almost surely, 2^156355980 is an apocalyptic number.

156355980 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 156355980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240033024).

156355980 is an abundant number, since it is smaller than the sum of its proper divisors (323710068).

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

156355980 is a wasteful number, since it uses less digits than its factorization.

156355980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The square root of 156355980 is about 12504.2384814110. The cubic root of 156355980 is about 538.7304193801.

The spelling of 156355980 in words is "one hundred fifty-six million, three hundred fifty-five thousand, nine hundred eighty".