156171960 has 192 divisors, whose sum is σ = 600350400. Its totient is φ = 34449408.

The previous prime is 156171941. The next prime is 156171991. The reversal of 156171960 is 69171651.

It is a happy number.

156171960 is a `hidden beast` number, since 1 + 561 + 7 + 1 + 96 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72012 + ... + 74148.

It is an arithmetic number, because the mean of its divisors is an integer number (3126825).

Almost surely, 2^156171960 is an apocalyptic number.

156171960 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 156171960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300175200).

156171960 is an abundant number, since it is smaller than the sum of its proper divisors (444178440).

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

156171960 is a wasteful number, since it uses less digits than its factorization.

156171960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190 (or 2183 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 156171960 is about 12496.8780101272. The cubic root of 156171960 is about 538.5189871306.

The spelling of 156171960 in words is "one hundred fifty-six million, one hundred seventy-one thousand, nine hundred sixty".