28405322076 has 24 divisors (see below), whose sum is σ = 66294418960. Its totient is φ = 9466250112.

The previous prime is 28405322063. The next prime is 28405322093. The reversal of 28405322076 is 67022350482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219361 + ... + 323928.

Almost surely, 2^28405322076 is an apocalyptic number.

It is an amenable number.

28405322076 is an abundant number, since it is smaller than the sum of its proper divisors (37889096884).

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

28405322076 is a wasteful number, since it uses less digits than its factorization.

28405322076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547653 (or 547651 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 28405322076 in words is "twenty-eight billion, four hundred five million, three hundred twenty-two thousand, seventy-six".