28287014646 has 64 divisors (see below), whose sum is σ = 68188801536. Its totient is φ = 7716825600.

The previous prime is 28287014627. The next prime is 28287014677. The reversal of 28287014646 is 64641078282.

It is a junction number, because it is equal to n+sod(n) for n = 28287014595 and 28287014604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 522265 + ... + 573876.

It is an arithmetic number, because the mean of its divisors is an integer number (1065450024).

Almost surely, 2^28287014646 is an apocalyptic number.

28287014646 is an abundant number, since it is smaller than the sum of its proper divisors (39901786890).

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

28287014646 is a wasteful number, since it uses less digits than its factorization.

28287014646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096197.

The product of its (nonzero) digits is 1032192, while the sum is 48.

The spelling of 28287014646 in words is "twenty-eight billion, two hundred eighty-seven million, fourteen thousand, six hundred forty-six".