28047834408 has 64 divisors (see below), whose sum is σ = 76509388800. Its totient is φ = 8497644480.

The previous prime is 28047834407. The next prime is 28047834413. The reversal of 28047834408 is 80443874082.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28047834401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2120985 + ... + 2134167.

It is an arithmetic number, because the mean of its divisors is an integer number (1195459200).

Almost surely, 2^28047834408 is an apocalyptic number.

It is an amenable number.

28047834408 is an abundant number, since it is smaller than the sum of its proper divisors (48461554392).

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

28047834408 is a wasteful number, since it uses less digits than its factorization.

28047834408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21262 (or 21258 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 48.

The spelling of 28047834408 in words is "twenty-eight billion, forty-seven million, eight hundred thirty-four thousand, four hundred eight".