158389220 has 24 divisors (see below), whose sum is σ = 362855808. Its totient is φ = 57596000.

The previous prime is 158389207. The next prime is 158389241. The reversal of 158389220 is 22983851.

158389220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 359756 + ... + 360195.

It is an arithmetic number, because the mean of its divisors is an integer number (15118992).

Almost surely, 2^158389220 is an apocalyptic number.

158389220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158389220 is an abundant number, since it is smaller than the sum of its proper divisors (204466588).

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

158389220 is a wasteful number, since it uses less digits than its factorization.

158389220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719971 (or 719969 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 158389220 is about 12585.2779071421. The cubic root of 158389220 is about 541.0555712963.

The spelling of 158389220 in words is "one hundred fifty-eight million, three hundred eighty-nine thousand, two hundred twenty".