158220228 has 24 divisors (see below), whose sum is σ = 372002400. Its totient is φ = 52336960.

The previous prime is 158220221. The next prime is 158220229. The reversal of 158220228 is 822022851.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 158220195 and 158220204.

It is not an unprimeable number, because it can be changed into a prime (158220221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48753 + ... + 51896.

It is an arithmetic number, because the mean of its divisors is an integer number (15500100).

Almost surely, 2^158220228 is an apocalyptic number.

It is an amenable number.

158220228 is an abundant number, since it is smaller than the sum of its proper divisors (213782172).

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

158220228 is a wasteful number, since it uses less digits than its factorization.

158220228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100787 (or 100785 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 158220228 is about 12578.5622389842. The cubic root of 158220228 is about 540.8630779758.

The spelling of 158220228 in words is "one hundred fifty-eight million, two hundred twenty thousand, two hundred twenty-eight".