158528172 has 96 divisors (see below), whose sum is σ = 438681600. Its totient is φ = 44020800.

The previous prime is 158528171. The next prime is 158528189. The reversal of 158528172 is 271825851.

It is a super-3 number, since 3×158528172³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 158528172.

It is not an unprimeable number, because it can be changed into a prime (158528171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76729 + ... + 78767.

It is an arithmetic number, because the mean of its divisors is an integer number (4569600).

Almost surely, 2^158528172 is an apocalyptic number.

158528172 is a gapful number since it is divisible by the number (12) 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 158528172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219340800).

158528172 is an abundant number, since it is smaller than the sum of its proper divisors (280153428).

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

158528172 is a wasteful number, since it uses less digits than its factorization.

158528172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2107 (or 2105 counting only the distinct ones).

The product of its digits is 44800, while the sum is 39.

The square root of 158528172 is about 12590.7971153537. The cubic root of 158528172 is about 541.2137444757.

The spelling of 158528172 in words is "one hundred fifty-eight million, five hundred twenty-eight thousand, one hundred seventy-two".