28294786782 has 32 divisors (see below), whose sum is σ = 63673228800. Its totient is φ = 9312206904.

The previous prime is 28294786781. The next prime is 28294786823. The reversal of 28294786782 is 28768749282.

28294786782 is a `hidden beast` number, since 2 + 8 + 29 + 478 + 67 + 82 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28294786781) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3312048 + ... + 3320579.

It is an arithmetic number, because the mean of its divisors is an integer number (1989788400).

Almost surely, 2^28294786782 is an apocalyptic number.

28294786782 is an abundant number, since it is smaller than the sum of its proper divisors (35378442018).

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

28294786782 is a wasteful number, since it uses less digits than its factorization.

28294786782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6632717 (or 6632711 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 63.

The spelling of 28294786782 in words is "twenty-eight billion, two hundred ninety-four million, seven hundred eighty-six thousand, seven hundred eighty-two".