158020 has 12 divisors (see below), whose sum is σ = 331884. Its totient is φ = 63200.

The previous prime is 158017. The next prime is 158029. The reversal of 158020 is 20851.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 82944 + 75076 = 288^2 + 274^2 .

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 157985 and 158003.

It is not an unprimeable number, because it can be changed into a prime (158029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3931 + ... + 3970.

It is an arithmetic number, because the mean of its divisors is an integer number (27657).

2¹⁵⁸⁰²⁰ is an apocalyptic number.

158020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158020 is an abundant number, since it is smaller than the sum of its proper divisors (173864).

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

158020 is a wasteful number, since it uses less digits than its factorization.

158020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7910 (or 7908 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 158020 is about 397.5172952212. The cubic root of 158020 is about 54.0634827246.

Adding to 158020 its reverse (20851), we get a palindrome (178871).

It can be divided in two parts, 1580 and 20, that added together give a square (1600 = 40²).

The spelling of 158020 in words is "one hundred fifty-eight thousand, twenty".