28773837782 has 4 divisors (see below), whose sum is σ = 43160756676. Its totient is φ = 14386918890.

The previous prime is 28773837751. The next prime is 28773837793.

28773837782 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7193459444 + ... + 7193459447.

It is an arithmetic number, because the mean of its divisors is an integer number (10790189169).

Almost surely, 2^28773837782 is an apocalyptic number.

28773837782 is a deficient number, since it is larger than the sum of its proper divisors (14386918894).

28773837782 is a wasteful number, since it uses less digits than its factorization.

28773837782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14386918893.

The product of its digits is 44255232, while the sum is 62.

The spelling of 28773837782 in words is "twenty-eight billion, seven hundred seventy-three million, eight hundred thirty-seven thousand, seven hundred eighty-two".