28449368 has 16 divisors (see below), whose sum is σ = 53672280. Its totient is φ = 14136768.

The previous prime is 28449353. The next prime is 28449371. The reversal of 28449368 is 86394482.

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, 9605 + ... + 12212.

Almost surely, 2^28449368 is an apocalyptic number.

It is an amenable number.

28449368 is a deficient number, since it is larger than the sum of its proper divisors (25222912).

28449368 is a wasteful number, since it uses less digits than its factorization.

28449368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21986 (or 21982 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 28449368 is about 5333.7948966941. The cubic root of 28449368 is about 305.2747430320.

The spelling of 28449368 in words is "twenty-eight million, four hundred forty-nine thousand, three hundred sixty-eight".