28765456782 has 32 divisors (see below), whose sum is σ = 60040576512. Its totient is φ = 9170324064.

The previous prime is 28765456763. The next prime is 28765456801.

28765456782 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (28765456763) and next prime (28765456801).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1936608 + ... + 1951404.

It is an arithmetic number, because the mean of its divisors is an integer number (1876268016).

Almost surely, 2^28765456782 is an apocalyptic number.

28765456782 is an abundant number, since it is smaller than the sum of its proper divisors (31275119730).

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

28765456782 is a wasteful number, since it uses less digits than its factorization.

28765456782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28912.

The product of its digits is 45158400, while the sum is 60.

The spelling of 28765456782 in words is "twenty-eight billion, seven hundred sixty-five million, four hundred fifty-six thousand, seven hundred eighty-two".