28828379864 has 8 divisors (see below), whose sum is σ = 54053212260. Its totient is φ = 14414189928.

The previous prime is 28828379809. The next prime is 28828379887. The reversal of 28828379864 is 46897382882.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 28828379864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1801773734 + ... + 1801773749.

Almost surely, 2^28828379864 is an apocalyptic number.

It is an amenable number.

28828379864 is a deficient number, since it is larger than the sum of its proper divisors (25224832396).

28828379864 is a wasteful number, since it uses less digits than its factorization.

28828379864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3603547489 (or 3603547485 counting only the distinct ones).

The product of its digits is 74317824, while the sum is 65.

The spelling of 28828379864 in words is "twenty-eight billion, eight hundred twenty-eight million, three hundred seventy-nine thousand, eight hundred sixty-four".