28604824717 has 12 divisors (see below), whose sum is σ = 33517891260. Its totient is φ = 24339448896.

The previous prime is 28604824709. The next prime is 28604824723. The reversal of 28604824717 is 71742840682.

It can be written as a sum of positive squares in 2 ways, for example, as 10912100521 + 17692724196 = 104461^2 + 133014^2 .

It is not a de Polignac number, because 28604824717 - 2³ = 28604824709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28604827717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2123842 + ... + 2137267.

It is an arithmetic number, because the mean of its divisors is an integer number (2793157605).

Almost surely, 2^28604824717 is an apocalyptic number.

It is an amenable number.

28604824717 is a deficient number, since it is larger than the sum of its proper divisors (4913066543).

28604824717 is a wasteful number, since it uses less digits than its factorization.

28604824717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4261260 (or 4261253 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 49.

The spelling of 28604824717 in words is "twenty-eight billion, six hundred four million, eight hundred twenty-four thousand, seven hundred seventeen".