228181822 has 16 divisors (see below), whose sum is σ = 382073472. Its totient is φ = 101306520.

The previous prime is 228181817. The next prime is 228181823.

228181822 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228181823) 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, 119658 + ... + 121549.

It is an arithmetic number, because the mean of its divisors is an integer number (23879592).

Almost surely, 2^228181822 is an apocalyptic number.

228181822 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

228181822 is a deficient number, since it is larger than the sum of its proper divisors (153891650).

228181822 is a wasteful number, since it uses less digits than its factorization.

228181822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241263.

The product of its digits is 8192, while the sum is 34.

The square root of 228181822 is about 15105.6883987457. The cubic root of 228181822 is about 611.0738247688.

The spelling of 228181822 in words is "two hundred twenty-eight million, one hundred eighty-one thousand, eight hundred twenty-two".