28227446 has 16 divisors (see below), whose sum is σ = 48281184. Its totient is φ = 12261504.

The previous prime is 28227439. The next prime is 28227449. The reversal of 28227446 is 64472282.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28227449) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 31490 + ... + 32373.

It is an arithmetic number, because the mean of its divisors is an integer number (3017574).

Almost surely, 2^28227446 is an apocalyptic number.

28227446 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28227446 is a deficient number, since it is larger than the sum of its proper divisors (20053738).

28227446 is a wasteful number, since it uses less digits than its factorization.

28227446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63895.

The product of its digits is 43008, while the sum is 35.

The square root of 28227446 is about 5312.9507808750. The cubic root of 28227446 is about 304.4788951825.

The spelling of 28227446 in words is "twenty-eight million, two hundred twenty-seven thousand, four hundred forty-six".