228686226 has 16 divisors (see below), whose sum is σ = 457562784. Its totient is φ = 76197024.

The previous prime is 228686201. The next prime is 228686281. The reversal of 228686226 is 622686822.

228686226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11265 + ... + 24171.

It is an arithmetic number, because the mean of its divisors is an integer number (28597674).

Almost surely, 2^228686226 is an apocalyptic number.

228686226 is an abundant number, since it is smaller than the sum of its proper divisors (228876558).

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

228686226 is a wasteful number, since it uses less digits than its factorization.

228686226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15865.

The product of its digits is 221184, while the sum is 42.

The square root of 228686226 is about 15122.3750118822. The cubic root of 228686226 is about 611.5237601770.

The spelling of 228686226 in words is "two hundred twenty-eight million, six hundred eighty-six thousand, two hundred twenty-six".