158941728 has 108 divisors (see below), whose sum is σ = 496924974. Its totient is φ = 48153600.

The previous prime is 158941723. The next prime is 158941787. The reversal of 158941728 is 827149851.

158941728 is a `hidden beast` number, since 1 + 589 + 41 + 7 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 144288144 + 14653584 = 12012^2 + 3828^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158941723) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 32568 + ... + 37128.

Almost surely, 2^158941728 is an apocalyptic number.

158941728 is a gapful number since it is divisible by the number (18) 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 158941728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248462487).

158941728 is an abundant number, since it is smaller than the sum of its proper divisors (337983246).

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

158941728 is a wasteful number, since it uses less digits than its factorization.

158941728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4599 (or 4577 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 158941728 is about 12607.2093660730. The cubic root of 158941728 is about 541.6839613045.

The spelling of 158941728 in words is "one hundred fifty-eight million, nine hundred forty-one thousand, seven hundred twenty-eight".