228145158 has 12 divisors (see below), whose sum is σ = 494314548. Its totient is φ = 76048380.

The previous prime is 228145123. The next prime is 228145187. The reversal of 228145158 is 851541822.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6337348 + ... + 6337383.

It is an arithmetic number, because the mean of its divisors is an integer number (41192879).

Almost surely, 2^228145158 is an apocalyptic number.

228145158 is an abundant number, since it is smaller than the sum of its proper divisors (266169390).

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

228145158 is a wasteful number, since it uses less digits than its factorization.

228145158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12674739 (or 12674736 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 228145158 is about 15104.4747674323. The cubic root of 228145158 is about 611.0410941294.

It can be divided in two parts, 22814 and 5158, that added together give a palindrome (27972).

The spelling of 228145158 in words is "two hundred twenty-eight million, one hundred forty-five thousand, one hundred fifty-eight".