28313324 has 12 divisors (see below), whose sum is σ = 53359824. Its totient is φ = 13067664.

The previous prime is 28313321. The next prime is 28313339. The reversal of 28313324 is 42331382.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 28313293 and 28313302.

It is not an unprimeable number, because it can be changed into a prime (28313321) by changing a digit.

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, 272192 + ... + 272295.

It is an arithmetic number, because the mean of its divisors is an integer number (4446652).

Almost surely, 2^28313324 is an apocalyptic number.

It is an amenable number.

28313324 is a deficient number, since it is larger than the sum of its proper divisors (25046500).

28313324 is a wasteful number, since it uses less digits than its factorization.

28313324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544504 (or 544502 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 28313324 is about 5321.0265926793. The cubic root of 28313324 is about 304.7873605210.

The spelling of 28313324 in words is "twenty-eight million, three hundred thirteen thousand, three hundred twenty-four".