156391452 has 96 divisors (see below), whose sum is σ = 475991040. Its totient is φ = 43467840.

The previous prime is 156391447. The next prime is 156391453. The reversal of 156391452 is 254193651.

156391452 is a `hidden beast` number, since 1 + 5 + 639 + 14 + 5 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156391453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25177 + ... + 30767.

It is an arithmetic number, because the mean of its divisors is an integer number (4958240).

Almost surely, 2^156391452 is an apocalyptic number.

156391452 is a gapful number since it is divisible by the number (12) 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 156391452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237995520).

156391452 is an abundant number, since it is smaller than the sum of its proper divisors (319599588).

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

156391452 is a wasteful number, since it uses less digits than its factorization.

156391452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5648 (or 5640 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 156391452 is about 12505.6568000245. The cubic root of 156391452 is about 538.7711563371.

The spelling of 156391452 in words is "one hundred fifty-six million, three hundred ninety-one thousand, four hundred fifty-two".