158518272 has 88 divisors (see below), whose sum is σ = 461017152. Its totient is φ = 48025600.

The previous prime is 158518229. The next prime is 158518291. The reversal of 158518272 is 272815851.

It is a tau number, because it is divible by the number of its divisors (88).

It is a super-4 number, since 4×158518272⁴ (a number of 34 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 158518272.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31447 + ... + 36137.

Almost surely, 2^158518272 is an apocalyptic number.

158518272 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 158518272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230508576).

158518272 is an abundant number, since it is smaller than the sum of its proper divisors (302498880).

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

158518272 is a wasteful number, since it uses less digits than its factorization.

158518272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4725 (or 4707 counting only the distinct ones).

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

The square root of 158518272 is about 12590.4039649250. The cubic root of 158518272 is about 541.2024780711.

The spelling of 158518272 in words is "one hundred fifty-eight million, five hundred eighteen thousand, two hundred seventy-two".