155967728 has 80 divisors (see below), whose sum is σ = 361089984. Its totient is φ = 63866880.

The previous prime is 155967719. The next prime is 155967733. The reversal of 155967728 is 827769551.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252476 + ... + 253092.

Almost surely, 2^155967728 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 155967728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180544992).

155967728 is an abundant number, since it is smaller than the sum of its proper divisors (205122256).

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

155967728 is a wasteful number, since it uses less digits than its factorization.

155967728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730 (or 724 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 50.

The square root of 155967728 is about 12488.7040160298. The cubic root of 155967728 is about 538.2841374868.

The spelling of 155967728 in words is "one hundred fifty-five million, nine hundred sixty-seven thousand, seven hundred twenty-eight".