158242728 has 64 divisors (see below), whose sum is σ = 456399360. Its totient is φ = 44784576.

The previous prime is 158242727. The next prime is 158242759. The reversal of 158242728 is 827242851.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (158242727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13575 + ... + 22377.

It is an arithmetic number, because the mean of its divisors is an integer number (7131240).

Almost surely, 2^158242728 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 158242728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228199680).

158242728 is an abundant number, since it is smaller than the sum of its proper divisors (298156632).

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

158242728 is a wasteful number, since it uses less digits than its factorization.

158242728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8926 (or 8922 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 158242728 is about 12579.4565860374. The cubic root of 158242728 is about 540.8887149052. Note that the first 3 decimals are identical.

The spelling of 158242728 in words is "one hundred fifty-eight million, two hundred forty-two thousand, seven hundred twenty-eight".