158278432 has 48 divisors (see below), whose sum is σ = 355336632. Its totient is φ = 68751360.

The previous prime is 158278403. The next prime is 158278457. The reversal of 158278432 is 234872851.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 135582736 + 22695696 = 11644^2 + 4764^2 .

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, 4119 + ... + 18262.

Almost surely, 2^158278432 is an apocalyptic number.

It is an amenable number.

158278432 is an abundant number, since it is smaller than the sum of its proper divisors (197058200).

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

158278432 is a wasteful number, since it uses less digits than its factorization.

158278432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22421 (or 22413 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 158278432 is about 12580.8756452005. The cubic root of 158278432 is about 540.9293917369.

The spelling of 158278432 in words is "one hundred fifty-eight million, two hundred seventy-eight thousand, four hundred thirty-two".