156642912 has 72 divisors (see below), whose sum is σ = 450888984. Its totient is φ = 51577344.

The previous prime is 156642901. The next prime is 156642917. The reversal of 156642912 is 219246651.

156642912 is a `hidden beast` number, since 1 + 5 + 6 + 642 + 9 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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 (156642917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20628 + ... + 27180.

It is an arithmetic number, because the mean of its divisors is an integer number (6262347).

Almost surely, 2^156642912 is an apocalyptic number.

156642912 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 156642912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225444492).

156642912 is an abundant number, since it is smaller than the sum of its proper divisors (294246072).

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

156642912 is a wasteful number, since it uses less digits than its factorization.

156642912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6652 (or 6641 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 156642912 is about 12515.7066120935. The cubic root of 156642912 is about 539.0597630056.

The spelling of 156642912 in words is "one hundred fifty-six million, six hundred forty-two thousand, nine hundred twelve".