28448294878 has 16 divisors (see below), whose sum is σ = 44543864736. Its totient is φ = 13600787200.

The previous prime is 28448294803. The next prime is 28448294881. The reversal of 28448294878 is 87849284482.

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, 18450 + ... + 239242.

It is an arithmetic number, because the mean of its divisors is an integer number (2783991546).

Almost surely, 2^28448294878 is an apocalyptic number.

28448294878 is a deficient number, since it is larger than the sum of its proper divisors (16095569858).

28448294878 is a wasteful number, since it uses less digits than its factorization.

28448294878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223619.

The product of its digits is 66060288, while the sum is 64.

The spelling of 28448294878 in words is "twenty-eight billion, four hundred forty-eight million, two hundred ninety-four thousand, eight hundred seventy-eight".