158155728 has 40 divisors (see below), whose sum is σ = 426335808. Its totient is φ = 50426112.

The previous prime is 158155721. The next prime is 158155771. The reversal of 158155728 is 827551851.

It is a self number, because there is not a number n which added to its sum of digits gives 158155728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158155721) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 70525 + ... + 72732.

Almost surely, 2^158155728 is an apocalyptic number.

It is an amenable number.

158155728 is an abundant number, since it is smaller than the sum of its proper divisors (268180080).

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

158155728 is a wasteful number, since it uses less digits than its factorization.

158155728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143291 (or 143285 counting only the distinct ones).

The product of its digits is 112000, while the sum is 42.

The square root of 158155728 is about 12575.9980916029. The cubic root of 158155728 is about 540.7895719719.

The spelling of 158155728 in words is "one hundred fifty-eight million, one hundred fifty-five thousand, seven hundred twenty-eight".