28104264207 has 12 divisors (see below), whose sum is σ = 40614019264. Its totient is φ = 18727420320.

The previous prime is 28104264203. The next prime is 28104264229. The reversal of 28104264207 is 70246240182.

28104264207 is a `hidden beast` number, since 2 + 8 + 1 + 0 + 4 + 2 + 642 + 0 + 7 = 666.

It is not a de Polignac number, because 28104264207 - 2² = 28104264203 is a prime.

It is a super-2 number, since 2×28104264207² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28104264203) 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, 709294 + ... + 747867.

Almost surely, 2^28104264207 is an apocalyptic number.

28104264207 is a deficient number, since it is larger than the sum of its proper divisors (12509755057).

28104264207 is a wasteful number, since it uses less digits than its factorization.

28104264207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459310 (or 1459307 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The spelling of 28104264207 in words is "twenty-eight billion, one hundred four million, two hundred sixty-four thousand, two hundred seven".