158856228 has 120 divisors (see below), whose sum is σ = 444939264. Its totient is φ = 49248000.

The previous prime is 158856209. The next prime is 158856241. The reversal of 158856228 is 822658851.

158856228 is a `hidden beast` number, since 1 + 5 + 88 + 562 + 2 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 831613 + ... + 831803.

Almost surely, 2^158856228 is an apocalyptic number.

158856228 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 158856228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222469632).

158856228 is an abundant number, since it is smaller than the sum of its proper divisors (286083036).

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

158856228 is a wasteful number, since it uses less digits than its factorization.

158856228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 364 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The square root of 158856228 is about 12603.8179929734. The cubic root of 158856228 is about 541.5868139907.

The spelling of 158856228 in words is "one hundred fifty-eight million, eight hundred fifty-six thousand, two hundred twenty-eight".