28804717 has 8 divisors (see below), whose sum is σ = 30325824. Its totient is φ = 27306048.

The previous prime is 28804709. The next prime is 28804739. The reversal of 28804717 is 71740882.

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

It is a cyclic number.

It is not a de Polignac number, because 28804717 - 2³ = 28804709 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 (28804117) 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, 2943 + ... + 8140.

It is an arithmetic number, because the mean of its divisors is an integer number (3790728).

Almost surely, 2^28804717 is an apocalyptic number.

It is an amenable number.

28804717 is a deficient number, since it is larger than the sum of its proper divisors (1521107).

28804717 is a wasteful number, since it uses less digits than its factorization.

28804717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11219.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 28804717 is about 5367.0026085330. The cubic root of 28804717 is about 306.5405066809.

The spelling of 28804717 in words is "twenty-eight million, eight hundred four thousand, seven hundred seventeen".