28746664782 has 96 divisors (see below), whose sum is σ = 65378544000. Its totient is φ = 8413606080.

The previous prime is 28746664769. The next prime is 28746664801.

28746664782 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 47 ways as a sum of consecutive naturals, for example, 3729969 + ... + 3737667.

It is an arithmetic number, because the mean of its divisors is an integer number (681026500).

Almost surely, 2^28746664782 is an apocalyptic number.

28746664782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28746664782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32689272000).

28746664782 is an abundant number, since it is smaller than the sum of its proper divisors (36631879218).

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

28746664782 is a wasteful number, since it uses less digits than its factorization.

28746664782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7902 (or 7891 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 60.

The spelling of 28746664782 in words is "twenty-eight billion, seven hundred forty-six million, six hundred sixty-four thousand, seven hundred eighty-two".