156261728 has 48 divisors (see below), whose sum is σ = 352636704. Its totient is φ = 66769920.

The previous prime is 156261727. The next prime is 156261737. The reversal of 156261728 is 827162651.

It is a junction number, because it is equal to n+sod(n) for n = 156261691 and 156261700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156261727) 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 7 ways as a sum of consecutive naturals, for example, 93476 + ... + 95132.

It is an arithmetic number, because the mean of its divisors is an integer number (7346598).

Almost surely, 2^156261728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156261728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176318352).

156261728 is an abundant number, since it is smaller than the sum of its proper divisors (196374976).

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

156261728 is a wasteful number, since it uses less digits than its factorization.

156261728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095 (or 2087 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 156261728 is about 12500.4691111974. The cubic root of 156261728 is about 538.6221480162.

The spelling of 156261728 in words is "one hundred fifty-six million, two hundred sixty-one thousand, seven hundred twenty-eight".