158159872 has 66 divisors (see below), whose sum is σ = 343638078. Its totient is φ = 72327168.

The previous prime is 158159863. The next prime is 158159879. The reversal of 158159872 is 278951851.

It can be written as a sum of positive squares in 3 ways, for example, as 23970816 + 134189056 = 4896^2 + 11584^2 .

It is a super-2 number, since 2×158159872² = 50029090222112768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158159879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1450954 + ... + 1451062.

Almost surely, 2^158159872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158159872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171819039).

158159872 is an abundant number, since it is smaller than the sum of its proper divisors (185478206).

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

158159872 is an equidigital number, since it uses as much as digits as its factorization.

158159872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 124 counting only the distinct ones).

The product of its digits is 201600, while the sum is 46.

The square root of 158159872 is about 12576.1628488184. The cubic root of 158159872 is about 540.7942951909.

The spelling of 158159872 in words is "one hundred fifty-eight million, one hundred fifty-nine thousand, eight hundred seventy-two".