158989320 has 144 divisors (see below), whose sum is σ = 601143660. Its totient is φ = 36336384.

The previous prime is 158989319. The next prime is 158989331. The reversal of 158989320 is 23989851.

It is a happy number.

158989320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 157703364 + 1285956 = 12558^2 + 1134^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13134 + ... + 22146.

Almost surely, 2^158989320 is an apocalyptic number.

158989320 is a gapful number since it is divisible by the number (10) 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 158989320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300571830).

158989320 is an abundant number, since it is smaller than the sum of its proper divisors (442154340).

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

158989320 is a wasteful number, since it uses less digits than its factorization.

158989320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9044 (or 9030 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 158989320 is about 12609.0967162601. The cubic root of 158989320 is about 541.7380214743.

It can be divided in two parts, 1589 and 89320, that added together give a palindrome (90909).

The spelling of 158989320 in words is "one hundred fifty-eight million, nine hundred eighty-nine thousand, three hundred twenty".