28753457448 has 32 divisors (see below), whose sum is σ = 72359703360. Its totient is φ = 9521011200.

The previous prime is 28753457419. The next prime is 28753457519. The reversal of 28753457448 is 84475435782.

It is a super-2 number, since 2×28753457448² (a number of 22 digits) contains 22 as substring.

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, 3963465 + ... + 3970712.

It is an arithmetic number, because the mean of its divisors is an integer number (2261240730).

Almost surely, 2^28753457448 is an apocalyptic number.

It is an amenable number.

28753457448 is an abundant number, since it is smaller than the sum of its proper divisors (43606245912).

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

28753457448 is a wasteful number, since it uses less digits than its factorization.

28753457448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7934337 (or 7934333 counting only the distinct ones).

The product of its digits is 30105600, while the sum is 57.

The spelling of 28753457448 in words is "twenty-eight billion, seven hundred fifty-three million, four hundred fifty-seven thousand, four hundred forty-eight".