28104264135 has 24 divisors (see below), whose sum is σ = 48729919680. Its totient is φ = 14984060352.

The previous prime is 28104264131. The next prime is 28104264163. The reversal of 28104264135 is 53146240182.

It is a happy number.

28104264135 is a `hidden beast` number, since 2 + 8 + 1 + 0 + 4 + 2 + 641 + 3 + 5 = 666.

It is not a de Polignac number, because 28104264135 - 2² = 28104264131 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28104264135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28104264131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40237 + ... + 240473.

It is an arithmetic number, because the mean of its divisors is an integer number (2030413320).

Almost surely, 2^28104264135 is an apocalyptic number.

28104264135 is a deficient number, since it is larger than the sum of its proper divisors (20625655545).

28104264135 is a wasteful number, since it uses less digits than its factorization.

28104264135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203367 (or 203364 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 28104264135 in words is "twenty-eight billion, one hundred four million, two hundred sixty-four thousand, one hundred thirty-five".