228822290 has 8 divisors (see below), whose sum is σ = 411880140. Its totient is φ = 91528912.

The previous prime is 228822281. The next prime is 228822311. The reversal of 228822290 is 92228822.

It can be written as a sum of positive squares in 2 ways, for example, as 212605561 + 16216729 = 14581^2 + 4027^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 228822290.

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 3 ways as a sum of consecutive naturals, for example, 11441105 + ... + 11441124.

Almost surely, 2^228822290 is an apocalyptic number.

228822290 is a deficient number, since it is larger than the sum of its proper divisors (183057850).

228822290 is a wasteful number, since it uses less digits than its factorization.

228822290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22882236.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 228822290 is about 15126.8731071560. The cubic root of 228822290 is about 611.6450178404.

The spelling of 228822290 in words is "two hundred twenty-eight million, eight hundred twenty-two thousand, two hundred ninety".