28033944 has 32 divisors (see below), whose sum is σ = 70711920. Its totient is φ = 9261056.

The previous prime is 28033933. The next prime is 28033961. The reversal of 28033944 is 44933082.

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, 2457 + ... + 7880.

Almost surely, 2^28033944 is an apocalyptic number.

28033944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28033944 is an abundant number, since it is smaller than the sum of its proper divisors (42677976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28033944 is a wasteful number, since it uses less digits than its factorization.

28033944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10459 (or 10455 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 28033944 is about 5294.7090571626. The cubic root of 28033944 is about 303.7815547499.

The spelling of 28033944 in words is "twenty-eight million, thirty-three thousand, nine hundred forty-four".