28753317 has 6 divisors (see below), whose sum is σ = 41532582. Its totient is φ = 19168872.

The previous prime is 28753279. The next prime is 28753339. The reversal of 28753317 is 71335782.

It can be written as a sum of positive squares in only one way, i.e., 28740321 + 12996 = 5361^2 + 114^2 .

It is not a de Polignac number, because 28753317 - 2⁶ = 28753253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28753217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1597398 + ... + 1597415.

It is an arithmetic number, because the mean of its divisors is an integer number (6922097).

Almost surely, 2^28753317 is an apocalyptic number.

It is an amenable number.

28753317 is a deficient number, since it is larger than the sum of its proper divisors (12779265).

28753317 is a wasteful number, since it uses less digits than its factorization.

28753317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3194819 (or 3194816 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 28753317 is about 5362.2119503056. The cubic root of 28753317 is about 306.3580647649.

The spelling of 28753317 in words is "twenty-eight million, seven hundred fifty-three thousand, three hundred seventeen".