156857472 has 168 divisors, whose sum is σ = 480225945. Its totient is φ = 51010560.

The previous prime is 156857461. The next prime is 156857497. The reversal of 156857472 is 274758651.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

156857472 is a `hidden beast` number, since 1 + 5 + 6 + 8 + 574 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 112021056 + 44836416 = 10584^2 + 6696^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8856.

It is an unprimeable number.

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 20 ways as a sum of consecutive naturals, for example, 3825772 + ... + 3825812.

Almost surely, 2^156857472 is an apocalyptic number.

156857472 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 156857472

156857472 is an abundant number, since it is smaller than the sum of its proper divisors (323368473).

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

156857472 is an frugal number, since it uses more digits than its factorization.

156857472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 46 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 156857472 is about 12524.2753083761. The cubic root of 156857472 is about 539.3057745510.

The spelling of 156857472 in words is "one hundred fifty-six million, eight hundred fifty-seven thousand, four hundred seventy-two".