28965471107904 has 42 divisors (see below), whose sum is σ = 83024293055730. Its totient is φ = 9655157035776.

The previous prime is 28965471107893. The next prime is 28965471107927. The reversal of 28965471107904 is 40970117456982.

28965471107904 is a `hidden beast` number, since 2 + 8 + 9 + 6 + 547 + 1 + 10 + 79 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28929768249600 + 35702858304 = 5378640^2 + 188952^2 .

It is a super-2 number, since 2×28965471107904² (a number of 28 digits) contains 22 as substring.

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, 25143637539 + ... + 25143638690.

Almost surely, 2^{28965471107904} is an apocalyptic number.

28965471107904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28965471107904 is an abundant number, since it is smaller than the sum of its proper divisors (54058821947826).

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

28965471107904 is a wasteful number, since it uses less digits than its factorization.

28965471107904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50287276247 (or 50287276234 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 28965471107904 in words is "twenty-eight trillion, nine hundred sixty-five billion, four hundred seventy-one million, one hundred seven thousand, nine hundred four".