228310290 has 48 divisors (see below), whose sum is σ = 639272088. Its totient is φ = 56199168.

The previous prime is 228310283. The next prime is 228310307. The reversal of 228310290 is 92013822.

It is a happy number.

228310290 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 189035001 + 39275289 = 13749^2 + 6267^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96399 + ... + 98738.

Almost surely, 2^228310290 is an apocalyptic number.

228310290 is an abundant number, since it is smaller than the sum of its proper divisors (410961798).

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

228310290 is a wasteful number, since it uses less digits than its factorization.

228310290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195163 (or 195160 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 228310290 is about 15109.9401057714. The cubic root of 228310290 is about 611.1884829003.

The spelling of 228310290 in words is "two hundred twenty-eight million, three hundred ten thousand, two hundred ninety".