28282448457 has 16 divisors (see below), whose sum is σ = 43251535360. Its totient is φ = 18246740400.

The previous prime is 28282448449. The next prime is 28282448507. The reversal of 28282448457 is 75484428282.

It is a happy number.

28282448457 is a `hidden beast` number, since 2 + 82 + 82 + 4 + 484 + 5 + 7 = 666.

It is not a de Polignac number, because 28282448457 - 2³ = 28282448449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28282448417) 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, 16894294 + ... + 16895967.

It is an arithmetic number, because the mean of its divisors is an integer number (2703220960).

Almost surely, 2^28282448457 is an apocalyptic number.

28282448457 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28282448457 is a deficient number, since it is larger than the sum of its proper divisors (14969086903).

28282448457 is a wasteful number, since it uses less digits than its factorization.

28282448457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33790301 (or 33790295 counting only the distinct ones).

The product of its digits is 9175040, while the sum is 54.

The spelling of 28282448457 in words is "twenty-eight billion, two hundred eighty-two million, four hundred forty-eight thousand, four hundred fifty-seven".