28485417564 has 18 divisors (see below), whose sum is σ = 72004805600. Its totient is φ = 9495139176.

The previous prime is 28485417539. The next prime is 28485417601. The reversal of 28485417564 is 46571458482.

28485417564 is a `hidden beast` number, since 2 + 8 + 48 + 541 + 7 + 56 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×28485417564² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) 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 28485417564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 395630764 + ... + 395630835.

Almost surely, 2^28485417564 is an apocalyptic number.

It is an amenable number.

28485417564 is an abundant number, since it is smaller than the sum of its proper divisors (43519388036).

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

28485417564 is a wasteful number, since it uses less digits than its factorization.

28485417564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791261609 (or 791261604 counting only the distinct ones).

The product of its digits is 8601600, while the sum is 54.

The spelling of 28485417564 in words is "twenty-eight billion, four hundred eighty-five million, four hundred seventeen thousand, five hundred sixty-four".