228992226 has 16 divisors (see below), whose sum is σ = 472758528. Its totient is φ = 73868400.

The previous prime is 228992143. The next prime is 228992249. The reversal of 228992226 is 622299822.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615385 + ... + 615756.

It is an arithmetic number, because the mean of its divisors is an integer number (29547408).

Almost surely, 2^228992226 is an apocalyptic number.

228992226 is an abundant number, since it is smaller than the sum of its proper divisors (243766302).

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

228992226 is a wasteful number, since it uses less digits than its factorization.

228992226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231177.

The product of its digits is 124416, while the sum is 42.

The square root of 228992226 is about 15132.4890880516. The cubic root of 228992226 is about 611.7963941009.

The spelling of 228992226 in words is "two hundred twenty-eight million, nine hundred ninety-two thousand, two hundred twenty-six".