28449364 has 12 divisors (see below), whose sum is σ = 52715124. Its totient is φ = 13387904.

The previous prime is 28449353. The next prime is 28449371. The reversal of 28449364 is 46394482.

It can be written as a sum of positive squares in 2 ways, for example, as 13176900 + 15272464 = 3630^2 + 3908^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 209119 + ... + 209254.

It is an arithmetic number, because the mean of its divisors is an integer number (4392927).

Almost surely, 2^28449364 is an apocalyptic number.

It is an amenable number.

28449364 is a deficient number, since it is larger than the sum of its proper divisors (24265760).

28449364 is a wasteful number, since it uses less digits than its factorization.

28449364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418394 (or 418392 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 28449364 is about 5333.7945217265. The cubic root of 28449364 is about 305.2747287247.

The spelling of 28449364 in words is "twenty-eight million, four hundred forty-nine thousand, three hundred sixty-four".