28619147646 has 24 divisors (see below), whose sum is σ = 62030259720. Its totient is φ = 9536314896.

The previous prime is 28619147587. The next prime is 28619147657. The reversal of 28619147646 is 64674191682.

28619147646 is a `hidden beast` number, since 2 + 8 + 619 + 14 + 7 + 6 + 4 + 6 = 666.

It is a super-2 number, since 2×28619147646² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28619147592 and 28619147601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231265 + ... + 332748.

It is an arithmetic number, because the mean of its divisors is an integer number (2584594155).

Almost surely, 2^28619147646 is an apocalyptic number.

28619147646 is an abundant number, since it is smaller than the sum of its proper divisors (33411112074).

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

28619147646 is a wasteful number, since it uses less digits than its factorization.

28619147646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566840 (or 566837 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 28619147646 in words is "twenty-eight billion, six hundred nineteen million, one hundred forty-seven thousand, six hundred forty-six".