158128684 has 36 divisors (see below), whose sum is σ = 322701624. Its totient is φ = 67601856.

The previous prime is 158128681. The next prime is 158128693. The reversal of 158128684 is 486821851.

158128684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 158128684.

It is not an unprimeable number, because it can be changed into a prime (158128681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109632 + ... + 111064.

It is an arithmetic number, because the mean of its divisors is an integer number (8963934).

Almost surely, 2^158128684 is an apocalyptic number.

158128684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

158128684 is an abundant number, since it is smaller than the sum of its proper divisors (164572940).

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

158128684 is a wasteful number, since it uses less digits than its factorization.

158128684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014 (or 2005 counting only the distinct ones).

The product of its digits is 122880, while the sum is 43.

The square root of 158128684 is about 12574.9228228248. The cubic root of 158128684 is about 540.7587459267.

The spelling of 158128684 in words is "one hundred fifty-eight million, one hundred twenty-eight thousand, six hundred eighty-four".