156641472 has 224 divisors, whose sum is σ = 523443200. Its totient is φ = 45536256.

The previous prime is 156641449. The next prime is 156641479. The reversal of 156641472 is 274146651.

156641472 is a `hidden beast` number, since 1 + 5 + 6 + 641 + 4 + 7 + 2 = 666.

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

Its product of digits (40320) is a multiple of the sum of its prime factors (420).

It is not an unprimeable number, because it can be changed into a prime (156641479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 426633 + ... + 426999.

It is an arithmetic number, because the mean of its divisors is an integer number (2336800).

Almost surely, 2^156641472 is an apocalyptic number.

156641472 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 156641472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261721600).

156641472 is an abundant number, since it is smaller than the sum of its proper divisors (366801728).

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

156641472 is a wasteful number, since it uses less digits than its factorization.

156641472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 404 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 156641472 is about 12515.6490842465. The cubic root of 156641472 is about 539.0581111628.

The spelling of 156641472 in words is "one hundred fifty-six million, six hundred forty-one thousand, four hundred seventy-two".