28655412464 has 120 divisors (see below), whose sum is σ = 67320834048. Its totient is φ = 11768319360.

The previous prime is 28655412421. The next prime is 28655412497. The reversal of 28655412464 is 46421455682.

It is a super-2 number, since 2×28655412464² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 2497589 + ... + 2509035.

Almost surely, 2^28655412464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28655412464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33660417024).

28655412464 is an abundant number, since it is smaller than the sum of its proper divisors (38665421584).

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

28655412464 is a wasteful number, since it uses less digits than its factorization.

28655412464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11603 (or 11590 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 47.

The spelling of 28655412464 in words is "twenty-eight billion, six hundred fifty-five million, four hundred twelve thousand, four hundred sixty-four".