158626728 has 128 divisors (see below), whose sum is σ = 502588800. Its totient is φ = 45923328.

The previous prime is 158626717. The next prime is 158626753. The reversal of 158626728 is 827626851.

158626728 is a `hidden beast` number, since 1 + 586 + 2 + 67 + 2 + 8 = 666.

158626728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46075 + ... + 49397.

It is an arithmetic number, because the mean of its divisors is an integer number (3926475).

Almost surely, 2^158626728 is an apocalyptic number.

158626728 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 158626728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251294400).

158626728 is an abundant number, since it is smaller than the sum of its proper divisors (343962072).

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

158626728 is a wasteful number, since it uses less digits than its factorization.

158626728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368 (or 3358 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 158626728 is about 12594.7103182249. The cubic root of 158626728 is about 541.3258776721.

The spelling of 158626728 in words is "one hundred fifty-eight million, six hundred twenty-six thousand, seven hundred twenty-eight".