28642475448385 has 48 divisors (see below), whose sum is σ = 36895879589184. Its totient is φ = 21332335280256.

The previous prime is 28642475448359. The next prime is 28642475448401. The reversal of 28642475448385 is 58384457424682.

It is not a de Polignac number, because 28642475448385 - 2²³ = 28642467059777 is a prime.

It is a super-2 number, since 2×28642475448385² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31742067 + ... + 32631943.

It is an arithmetic number, because the mean of its divisors is an integer number (768664158108).

Almost surely, 2^{28642475448385} is an apocalyptic number.

It is an amenable number.

28642475448385 is a deficient number, since it is larger than the sum of its proper divisors (8253404140799).

28642475448385 is a wasteful number, since it uses less digits than its factorization.

28642475448385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890254 (or 890231 counting only the distinct ones).

The product of its digits is 1651507200, while the sum is 70.

The spelling of 28642475448385 in words is "twenty-eight trillion, six hundred forty-two billion, four hundred seventy-five million, four hundred forty-eight thousand, three hundred eighty-five".