158755220 has 48 divisors (see below), whose sum is σ = 361255440. Its totient is φ = 58601088.

The previous prime is 158755199. The next prime is 158755243. The reversal of 158755220 is 22557851.

158755220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 155650576 + 3104644 = 12476^2 + 1762^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42134 + ... + 45746.

It is an arithmetic number, because the mean of its divisors is an integer number (7526155).

Almost surely, 2^158755220 is an apocalyptic number.

158755220 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 158755220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180627720).

158755220 is an abundant number, since it is smaller than the sum of its proper divisors (202500220).

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

158755220 is a wasteful number, since it uses less digits than its factorization.

158755220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661 (or 3633 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 158755220 is about 12599.8103160325. The cubic root of 158755220 is about 541.4720011601.

The spelling of 158755220 in words is "one hundred fifty-eight million, seven hundred fifty-five thousand, two hundred twenty".