158497728 has 28 divisors (see below), whose sum is σ = 419359080. Its totient is φ = 52832512.

The previous prime is 158497723. The next prime is 158497831. The reversal of 158497728 is 827794851.

158497728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158497723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412563 + ... + 412946.

It is an arithmetic number, because the mean of its divisors is an integer number (14977110).

Almost surely, 2^158497728 is an apocalyptic number.

It is an amenable number.

158497728 is an abundant number, since it is smaller than the sum of its proper divisors (260861352).

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

158497728 is an equidigital number, since it uses as much as digits as its factorization.

158497728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825524 (or 825514 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 51.

The square root of 158497728 is about 12589.5880790437. The cubic root of 158497728 is about 541.1790970776.

The spelling of 158497728 in words is "one hundred fifty-eight million, four hundred ninety-seven thousand, seven hundred twenty-eight".