28090468394568 has 96 divisors (see below), whose sum is σ = 78708756555000. Its totient is φ = 9039804899328.

The previous prime is 28090468394531. The next prime is 28090468394609. The reversal of 28090468394568 is 86549386409082.

It is a happy number.

28090468394568 is a `hidden beast` number, since 2 + 8 + 0 + 90 + 4 + 6 + 83 + 9 + 456 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17610629036004 + 10479839358564 = 4196502^2 + 3237258^2 .

It is a super-2 number, since 2×28090468394568² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 28090468394496 and 28090468394505.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23061198 + ... + 24248706.

Almost surely, 2^{28090468394568} is an apocalyptic number.

It is an amenable number.

28090468394568 is an abundant number, since it is smaller than the sum of its proper divisors (50618288160432).

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

28090468394568 is a wasteful number, since it uses less digits than its factorization.

28090468394568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198879 (or 1198872 counting only the distinct ones).

The product of its (nonzero) digits is 716636160, while the sum is 72.

The spelling of 28090468394568 in words is "twenty-eight trillion, ninety billion, four hundred sixty-eight million, three hundred ninety-four thousand, five hundred sixty-eight".