228140228 has 12 divisors (see below), whose sum is σ = 400318380. Its totient is φ = 113763552.

The previous prime is 228140219. The next prime is 228140251. The reversal of 228140228 is 822041822.

It can be written as a sum of positive squares in 2 ways, for example, as 37920964 + 190219264 = 6158^2 + 13792^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 228140228.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74963 + ... + 77946.

It is an arithmetic number, because the mean of its divisors is an integer number (33359865).

Almost surely, 2^228140228 is an apocalyptic number.

It is an amenable number.

228140228 is a deficient number, since it is larger than the sum of its proper divisors (172178152).

228140228 is a wasteful number, since it uses less digits than its factorization.

228140228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153286 (or 153284 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 228140228 is about 15104.3115698796. The cubic root of 228140228 is about 611.0366927587.

The spelling of 228140228 in words is "two hundred twenty-eight million, one hundred forty thousand, two hundred twenty-eight".