158208020 has 24 divisors (see below), whose sum is σ = 333236904. Its totient is φ = 63092736.

The previous prime is 158207999. The next prime is 158208031. The reversal of 158208020 is 20802851.

It can be written as a sum of positive squares in 4 ways, for example, as 42172036 + 116035984 = 6494^2 + 10772^2 .

It is a congruent number.

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, 4997 + ... + 18476.

It is an arithmetic number, because the mean of its divisors is an integer number (13884871).

Almost surely, 2^158208020 is an apocalyptic number.

158208020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158208020 is an abundant number, since it is smaller than the sum of its proper divisors (175028884).

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

158208020 is a wasteful number, since it uses less digits than its factorization.

158208020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23819 (or 23817 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 158208020 is about 12578.0769595356. The cubic root of 158208020 is about 540.8491669305.

The spelling of 158208020 in words is "one hundred fifty-eight million, two hundred eight thousand, twenty".