158797980 has 216 divisors, whose sum is σ = 554220576. Its totient is φ = 36706560.

The previous prime is 158797949. The next prime is 158797999. The reversal of 158797980 is 89797851.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 500782 + ... + 501098.

It is an arithmetic number, because the mean of its divisors is an integer number (2565836).

Almost surely, 2^158797980 is an apocalyptic number.

158797980 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 158797980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277110288).

158797980 is an abundant number, since it is smaller than the sum of its proper divisors (395422596).

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

158797980 is a wasteful number, since it uses less digits than its factorization.

158797980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The square root of 158797980 is about 12601.5070527298. The cubic root of 158797980 is about 541.5206111404.

The spelling of 158797980 in words is "one hundred fifty-eight million, seven hundred ninety-seven thousand, nine hundred eighty".