28822226 has 4 divisors (see below), whose sum is σ = 43233342. Its totient is φ = 14411112.

The previous prime is 28822207. The next prime is 28822229. The reversal of 28822226 is 62222882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18931201 + 9891025 = 4351^2 + 3145^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28822192 and 28822201.

It is not an unprimeable number, because it can be changed into a prime (28822229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7205555 + ... + 7205558.

Almost surely, 2^28822226 is an apocalyptic number.

28822226 is a deficient number, since it is larger than the sum of its proper divisors (14411116).

28822226 is a wasteful number, since it uses less digits than its factorization.

28822226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14411115.

The product of its digits is 12288, while the sum is 32.

The square root of 28822226 is about 5368.6335319148. The cubic root of 28822226 is about 306.6026045033.

The spelling of 28822226 in words is "twenty-eight million, eight hundred twenty-two thousand, two hundred twenty-six".