28265893544 has 32 divisors (see below), whose sum is σ = 61562726400. Its totient is φ = 11915363520.

The previous prime is 28265893541. The next prime is 28265893583. The reversal of 28265893544 is 44539856282.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a self number, because there is not a number n which added to its sum of digits gives 28265893544.

It is not an unprimeable number, because it can be changed into a prime (28265893541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4133864 + ... + 4140695.

It is an arithmetic number, because the mean of its divisors is an integer number (1923835200).

Almost surely, 2^28265893544 is an apocalyptic number.

It is an amenable number.

28265893544 is an abundant number, since it is smaller than the sum of its proper divisors (33296832856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28265893544 is a wasteful number, since it uses less digits than its factorization.

28265893544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8274633 (or 8274629 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 56.

The spelling of 28265893544 in words is "twenty-eight billion, two hundred sixty-five million, eight hundred ninety-three thousand, five hundred forty-four".