28318336 has 32 divisors (see below), whose sum is σ = 58874400. Its totient is φ = 13542144.

The previous prime is 28318321. The next prime is 28318343. The reversal of 28318336 is 63381382.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1866 + ... + 7753.

It is an arithmetic number, because the mean of its divisors is an integer number (1839825).

Almost surely, 2^28318336 is an apocalyptic number.

It is an amenable number.

28318336 is an abundant number, since it is smaller than the sum of its proper divisors (30556064).

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

28318336 is an equidigital number, since it uses as much as digits as its factorization.

28318336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9656 (or 9644 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 28318336 is about 5321.4975335896. The cubic root of 28318336 is about 304.8053438577.

The spelling of 28318336 in words is "twenty-eight million, three hundred eighteen thousand, three hundred thirty-six".