28495317 has 8 divisors (see below), whose sum is σ = 38022496. Its totient is φ = 18982512.

The previous prime is 28495309. The next prime is 28495319. The reversal of 28495317 is 71359482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28495317 - 2³ = 28495309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28495319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2523 + ... + 7959.

It is an arithmetic number, because the mean of its divisors is an integer number (4752812).

Almost surely, 2^28495317 is an apocalyptic number.

It is an amenable number.

28495317 is a deficient number, since it is larger than the sum of its proper divisors (9527179).

28495317 is a wasteful number, since it uses less digits than its factorization.

28495317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7187.

The product of its digits is 60480, while the sum is 39.

The square root of 28495317 is about 5338.1005048613. The cubic root of 28495317 is about 305.4390058978.

The spelling of 28495317 in words is "twenty-eight million, four hundred ninety-five thousand, three hundred seventeen".