228405226 has 32 divisors (see below), whose sum is σ = 410001408. Its totient is φ = 93305520.

The previous prime is 228405209. The next prime is 228405227. The reversal of 228405226 is 622504822.

228405226 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×228405226² = 104337894528222152, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (228405227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105511 + ... + 107653.

It is an arithmetic number, because the mean of its divisors is an integer number (12812544).

Almost surely, 2^228405226 is an apocalyptic number.

228405226 is a deficient number, since it is larger than the sum of its proper divisors (181596182).

228405226 is a wasteful number, since it uses less digits than its factorization.

228405226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 228405226 is about 15113.0812874146. The cubic root of 228405226 is about 611.2731859729.

The spelling of 228405226 in words is "two hundred twenty-eight million, four hundred five thousand, two hundred twenty-six".