158302728 has 64 divisors (see below), whose sum is σ = 445344000. Its totient is φ = 52094016.

The previous prime is 158302667. The next prime is 158302733. The reversal of 158302728 is 827203851.

158302728 is a `hidden beast` number, since 1 + 583 + 0 + 2 + 72 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 158302692 and 158302701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12426 + ... + 21702.

It is an arithmetic number, because the mean of its divisors is an integer number (6958500).

Almost surely, 2^158302728 is an apocalyptic number.

158302728 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 158302728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222672000).

158302728 is an abundant number, since it is smaller than the sum of its proper divisors (287041272).

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

158302728 is a wasteful number, since it uses less digits than its factorization.

158302728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9371 (or 9361 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 158302728 is about 12581.8412007146. The cubic root of 158302728 is about 540.9570681717.

The spelling of 158302728 in words is "one hundred fifty-eight million, three hundred two thousand, seven hundred twenty-eight".