158881572 has 144 divisors (see below), whose sum is σ = 447283200. Its totient is φ = 47355840.

The previous prime is 158881571. The next prime is 158881579. The reversal of 158881572 is 275188851.

It is not an unprimeable number, because it can be changed into a prime (158881571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1250973 + ... + 1251099.

Almost surely, 2^158881572 is an apocalyptic number.

158881572 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 158881572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223641600).

158881572 is an abundant number, since it is smaller than the sum of its proper divisors (288401628).

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

158881572 is a wasteful number, since it uses less digits than its factorization.

158881572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 241 counting only the distinct ones).

The product of its digits is 179200, while the sum is 45.

The square root of 158881572 is about 12604.8233625069. The cubic root of 158881572 is about 541.6156141338.

The spelling of 158881572 in words is "one hundred fifty-eight million, eight hundred eighty-one thousand, five hundred seventy-two".