28003296 has 24 divisors (see below), whose sum is σ = 73508904. Its totient is φ = 9334400.

The previous prime is 28003279. The next prime is 28003309. The reversal of 28003296 is 69230082.

It is a tau number, because it is divible by the number of its divisors (24).

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 3 ways as a sum of consecutive naturals, for example, 145755 + ... + 145946.

It is an arithmetic number, because the mean of its divisors is an integer number (3062871).

Almost surely, 2^28003296 is an apocalyptic number.

It is an amenable number.

28003296 is an abundant number, since it is smaller than the sum of its proper divisors (45505608).

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

28003296 is a wasteful number, since it uses less digits than its factorization.

28003296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291714 (or 291706 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 28003296 is about 5291.8140556902. The cubic root of 28003296 is about 303.6708117168.

The spelling of 28003296 in words is "twenty-eight million, three thousand, two hundred ninety-six".