28810226 has 8 divisors (see below), whose sum is σ = 43612140. Its totient is φ = 14272848.

The previous prime is 28810207. The next prime is 28810247. The reversal of 28810226 is 62201882.

It can be written as a sum of positive squares in 2 ways, for example, as 28249225 + 561001 = 5315^2 + 749^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 65861 + ... + 66296.

Almost surely, 2^28810226 is an apocalyptic number.

28810226 is a deficient number, since it is larger than the sum of its proper divisors (14801914).

28810226 is a wasteful number, since it uses less digits than its factorization.

28810226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132268.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 28810226 is about 5367.5158127387. The cubic root of 28810226 is about 306.5600477397.

The spelling of 28810226 in words is "twenty-eight million, eight hundred ten thousand, two hundred twenty-six".