158320 has 20 divisors (see below), whose sum is σ = 368280. Its totient is φ = 63296.

The previous prime is 158303. The next prime is 158329. The reversal of 158320 is 23851.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158329) by changing a digit.

158320 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 910 + ... + 1069.

It is an arithmetic number, because the mean of its divisors is an integer number (18414).

2¹⁵⁸³²⁰ is an apocalyptic number.

158320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158320 is an abundant number, since it is smaller than the sum of its proper divisors (209960).

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

158320 is a wasteful number, since it uses less digits than its factorization.

158320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992 (or 1986 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 158320 is about 397.8944583680. The cubic root of 158320 is about 54.0976741597.

The spelling of 158320 in words is "one hundred fifty-eight thousand, three hundred twenty".