28856648442 has 16 divisors (see below), whose sum is σ = 58503890880. Its totient is φ = 9487117152.

The previous prime is 28856648441. The next prime is 28856648473. The reversal of 28856648442 is 24484665882.

It is not an unprimeable number, because it can be changed into a prime (28856648441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32940942 + ... + 32941817.

It is an arithmetic number, because the mean of its divisors is an integer number (3656493180).

Almost surely, 2^28856648442 is an apocalyptic number.

28856648442 is an abundant number, since it is smaller than the sum of its proper divisors (29647242438).

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

28856648442 is a wasteful number, since it uses less digits than its factorization.

28856648442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65882837.

The product of its digits is 23592960, while the sum is 57.

The spelling of 28856648442 in words is "twenty-eight billion, eight hundred fifty-six million, six hundred forty-eight thousand, four hundred forty-two".