158171328 has 84 divisors (see below), whose sum is σ = 518149840. Its totient is φ = 45190656.

The previous prime is 158171323. The next prime is 158171339. The reversal of 158171328 is 823171851.

158171328 is a `hidden beast` number, since 1 + 581 + 71 + 3 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

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 = 158171292 and 158171301.

It is not an unprimeable number, because it can be changed into a prime (158171323) 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, 15583 + ... + 23646.

Almost surely, 2^158171328 is an apocalyptic number.

158171328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

158171328 is an abundant number, since it is smaller than the sum of its proper divisors (359978512).

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

158171328 is a wasteful number, since it uses less digits than its factorization.

158171328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39254 (or 39241 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 158171328 is about 12576.6183054110. The cubic root of 158171328 is about 540.8073520002.

The spelling of 158171328 in words is "one hundred fifty-eight million, one hundred seventy-one thousand, three hundred twenty-eight".