28780608782 has 8 divisors (see below), whose sum is σ = 43175548152. Its totient is φ = 14388759400.

The previous prime is 28780608761. The next prime is 28780608793.

28780608782 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749069 + ... + 786552.

It is an arithmetic number, because the mean of its divisors is an integer number (5396943519).

Almost surely, 2^28780608782 is an apocalyptic number.

28780608782 is a deficient number, since it is larger than the sum of its proper divisors (14394939370).

28780608782 is a wasteful number, since it uses less digits than its factorization.

28780608782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544994.

The product of its (nonzero) digits is 4816896, while the sum is 56.

The spelling of 28780608782 in words is "twenty-eight billion, seven hundred eighty million, six hundred eight thousand, seven hundred eighty-two".