28283313 has 16 divisors (see below), whose sum is σ = 38506496. Its totient is φ = 18461520.

The previous prime is 28283263. The next prime is 28283327. The reversal of 28283313 is 31338282.

It is not a de Polignac number, because 28283313 - 2²⁴ = 11506097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28283363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44508 + ... + 45138.

It is an arithmetic number, because the mean of its divisors is an integer number (2406656).

Almost surely, 2^28283313 is an apocalyptic number.

It is an amenable number.

28283313 is a deficient number, since it is larger than the sum of its proper divisors (10223183).

28283313 is a wasteful number, since it uses less digits than its factorization.

28283313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924.

The product of its digits is 6912, while the sum is 30.

The square root of 28283313 is about 5318.2058064727. The cubic root of 28283313 is about 304.6796349475.

The spelling of 28283313 in words is "twenty-eight million, two hundred eighty-three thousand, three hundred thirteen".