28222246 has 16 divisors (see below), whose sum is σ = 45693648. Its totient is φ = 12996000.

The previous prime is 28222223. The next prime is 28222253. The reversal of 28222246 is 64222282.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 13896 + ... + 15796.

It is an arithmetic number, because the mean of its divisors is an integer number (2855853).

Almost surely, 2^28222246 is an apocalyptic number.

28222246 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28222246 is a deficient number, since it is larger than the sum of its proper divisors (17471402).

28222246 is a wasteful number, since it uses less digits than its factorization.

28222246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487.

The product of its digits is 6144, while the sum is 28.

The square root of 28222246 is about 5312.4613880950. The cubic root of 28222246 is about 304.4601972163.

The spelling of 28222246 in words is "twenty-eight million, two hundred twenty-two thousand, two hundred forty-six".