158698920 has 128 divisors (see below), whose sum is σ = 505175040. Its totient is φ = 39813120.

The previous prime is 158698909. The next prime is 158698921. The reversal of 158698920 is 29896851.

It is a happy number.

158698920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 158698920.

It is not an unprimeable number, because it can be changed into a prime (158698921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137064 + ... + 138216.

It is an arithmetic number, because the mean of its divisors is an integer number (3946680).

Almost surely, 2^158698920 is an apocalyptic number.

158698920 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 158698920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252587520).

158698920 is an abundant number, since it is smaller than the sum of its proper divisors (346476120).

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

158698920 is a wasteful number, since it uses less digits than its factorization.

158698920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235 (or 1231 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 158698920 is about 12597.5759573023. The cubic root of 158698920 is about 541.4079854634.

The spelling of 158698920 in words is "one hundred fifty-eight million, six hundred ninety-eight thousand, nine hundred twenty".