28286324 has 12 divisors (see below), whose sum is σ = 54001248. Its totient is φ = 12857400.

The previous prime is 28286299. The next prime is 28286341. The reversal of 28286324 is 42368282.

It is a super-2 number, since 2×28286324² = 1600232250865952, which contains 22 as substring.

It is a congruent number.

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, 321392 + ... + 321479.

It is an arithmetic number, because the mean of its divisors is an integer number (4500104).

Almost surely, 2^28286324 is an apocalyptic number.

It is an amenable number.

28286324 is a deficient number, since it is larger than the sum of its proper divisors (25714924).

28286324 is a wasteful number, since it uses less digits than its factorization.

28286324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642886 (or 642884 counting only the distinct ones).

The product of its digits is 36864, while the sum is 35.

The square root of 28286324 is about 5318.4888831321. The cubic root of 28286324 is about 304.6904464795.

The spelling of 28286324 in words is "twenty-eight million, two hundred eighty-six thousand, three hundred twenty-four".