28455648393 has 16 divisors (see below), whose sum is σ = 38688564096. Its totient is φ = 18600230400.

The previous prime is 28455648383. The next prime is 28455648401. The reversal of 28455648393 is 39384655482.

It is not a de Polignac number, because 28455648393 - 2⁶ = 28455648329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28455648313) 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, 424680 + ... + 487097.

It is an arithmetic number, because the mean of its divisors is an integer number (2418035256).

Almost surely, 2^28455648393 is an apocalyptic number.

It is an amenable number.

28455648393 is a deficient number, since it is larger than the sum of its proper divisors (10232915703).

28455648393 is a wasteful number, since it uses less digits than its factorization.

28455648393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911984.

The product of its digits is 24883200, while the sum is 57.

The spelling of 28455648393 in words is "twenty-eight billion, four hundred fifty-five million, six hundred forty-eight thousand, three hundred ninety-three".