28304324 has 12 divisors (see below), whose sum is σ = 49717248. Its totient is φ = 14099400.

The previous prime is 28304321. The next prime is 28304327. The reversal of 28304324 is 42340382.

It is an interprime number because it is at equal distance from previous prime (28304321) and next prime (28304327).

It is a super-2 number, since 2×28304324² = 1602269514193952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28304293 and 28304302.

It is not an unprimeable number, because it can be changed into a prime (28304321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11972 + ... + 14139.

It is an arithmetic number, because the mean of its divisors is an integer number (4143104).

Almost surely, 2^28304324 is an apocalyptic number.

It is an amenable number.

28304324 is a deficient number, since it is larger than the sum of its proper divisors (21412924).

28304324 is a wasteful number, since it uses less digits than its factorization.

28304324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26386 (or 26384 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 28304324 is about 5320.1808239946. The cubic root of 28304324 is about 304.7550626890.

The spelling of 28304324 in words is "twenty-eight million, three hundred four thousand, three hundred twenty-four".