158739228 has 36 divisors (see below), whose sum is σ = 402701208. Its totient is φ = 52722720.

The previous prime is 158739227. The next prime is 158739233. The reversal of 158739228 is 822937851.

It is a happy number.

158739228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158739221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2398 + ... + 17978.

Almost surely, 2^158739228 is an apocalyptic number.

158739228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

158739228 is an abundant number, since it is smaller than the sum of its proper divisors (243961980).

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

158739228 is a wasteful number, since it uses less digits than its factorization.

158739228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15874 (or 15869 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 158739228 is about 12599.1756873218. The cubic root of 158739228 is about 541.4538190577.

The spelling of 158739228 in words is "one hundred fifty-eight million, seven hundred thirty-nine thousand, two hundred twenty-eight".