28228466 has 32 divisors (see below), whose sum is σ = 51891840. Its totient is φ = 11241216.

The previous prime is 28228451. The next prime is 28228469. The reversal of 28228466 is 66482282.

28228466 is a modest number, since divided by 8466 gives 2822 as remainder.

It is not an unprimeable number, because it can be changed into a prime (28228469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19040 + ... + 20468.

It is an arithmetic number, because the mean of its divisors is an integer number (1621620).

Almost surely, 2^28228466 is an apocalyptic number.

28228466 is a deficient number, since it is larger than the sum of its proper divisors (23663374).

28228466 is a wasteful number, since it uses less digits than its factorization.

28228466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538.

The product of its digits is 73728, while the sum is 38.

The square root of 28228466 is about 5313.0467718626. The cubic root of 28228466 is about 304.4825625910.

The spelling of 28228466 in words is "twenty-eight million, two hundred twenty-eight thousand, four hundred sixty-six".