228909822 has 16 divisors (see below), whose sum is σ = 464268672. Its totient is φ = 75228440.

The previous prime is 228909781. The next prime is 228909827.

228909822 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228909827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268248 + ... + 269099.

It is an arithmetic number, because the mean of its divisors is an integer number (29016792).

Almost surely, 2^228909822 is an apocalyptic number.

228909822 is an abundant number, since it is smaller than the sum of its proper divisors (235358850).

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

228909822 is a wasteful number, since it uses less digits than its factorization.

228909822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537423.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 228909822 is about 15129.7660920452. The cubic root of 228909822 is about 611.7229992970.

The spelling of 228909822 in words is "two hundred twenty-eight million, nine hundred nine thousand, eight hundred twenty-two".