158208820 has 96 divisors (see below), whose sum is σ = 436101120. Its totient is φ = 46707840.

The previous prime is 158208767. The next prime is 158208821. The reversal of 158208820 is 28802851.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158208821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26557 + ... + 31963.

It is an arithmetic number, because the mean of its divisors is an integer number (4542720).

Almost surely, 2^158208820 is an apocalyptic number.

158208820 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 158208820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218050560).

158208820 is an abundant number, since it is smaller than the sum of its proper divisors (277892300).

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

158208820 is a wasteful number, since it uses less digits than its factorization.

158208820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5453 (or 5451 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 158208820 is about 12578.1087608591. The cubic root of 158208820 is about 540.8500785544.

The spelling of 158208820 in words is "one hundred fifty-eight million, two hundred eight thousand, eight hundred twenty".