28775457782 has 16 divisors (see below), whose sum is σ = 45509821440. Its totient is φ = 13608013608.

The previous prime is 28775457743. The next prime is 28775457791.

28775457782 is nontrivially palindromic in base 10.

It is a congruent number.

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, 600698 + ... + 646829.

It is an arithmetic number, because the mean of its divisors is an integer number (2844363840).

Almost surely, 2^28775457782 is an apocalyptic number.

28775457782 is a deficient number, since it is larger than the sum of its proper divisors (16734363658).

28775457782 is a wasteful number, since it uses less digits than its factorization.

28775457782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248155.

The product of its digits is 61465600, while the sum is 62.

The spelling of 28775457782 in words is "twenty-eight billion, seven hundred seventy-five million, four hundred fifty-seven thousand, seven hundred eighty-two".