28872226 has 16 divisors (see below), whose sum is σ = 44985600. Its totient is φ = 13881168.

The previous prime is 28872211. The next prime is 28872251. The reversal of 28872226 is 62227882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15535 + ... + 17293.

It is an arithmetic number, because the mean of its divisors is an integer number (2811600).

Almost surely, 2^28872226 is an apocalyptic number.

28872226 is a deficient number, since it is larger than the sum of its proper divisors (16113374).

28872226 is a wasteful number, since it uses less digits than its factorization.

28872226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073.

The product of its digits is 43008, while the sum is 37.

The square root of 28872226 is about 5373.2881925316. The cubic root of 28872226 is about 306.7797973174.

The spelling of 28872226 in words is "twenty-eight million, eight hundred seventy-two thousand, two hundred twenty-six".