228145188 has 24 divisors (see below), whose sum is σ = 555484608. Its totient is φ = 72741856.

The previous prime is 228145187. The next prime is 228145193. The reversal of 228145188 is 881541822.

It is not an unprimeable number, because it can be changed into a prime (228145187) 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, 413031 + ... + 413582.

It is an arithmetic number, because the mean of its divisors is an integer number (23145192).

Almost surely, 2^228145188 is an apocalyptic number.

It is an amenable number.

228145188 is an abundant number, since it is smaller than the sum of its proper divisors (327339420).

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

228145188 is a wasteful number, since it uses less digits than its factorization.

228145188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826643 (or 826641 counting only the distinct ones).

The product of its digits is 40960, while the sum is 39.

The square root of 228145188 is about 15104.4757605155. The cubic root of 228145188 is about 611.0411209124.

The spelling of 228145188 in words is "two hundred twenty-eight million, one hundred forty-five thousand, one hundred eighty-eight".