28366815448 has 16 divisors (see below), whose sum is σ = 53221402080. Its totient is φ = 14174441568.

The previous prime is 28366815431. The next prime is 28366815457. The reversal of 28366815448 is 84451866382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107315 + ... + 1132642.

It is an arithmetic number, because the mean of its divisors is an integer number (3326337630).

Almost surely, 2^28366815448 is an apocalyptic number.

It is an amenable number.

28366815448 is a deficient number, since it is larger than the sum of its proper divisors (24854586632).

28366815448 is a wasteful number, since it uses less digits than its factorization.

28366815448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241546 (or 2241542 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 55.

The spelling of 28366815448 in words is "twenty-eight billion, three hundred sixty-six million, eight hundred fifteen thousand, four hundred forty-eight".