28104780783 has 8 divisors (see below), whose sum is σ = 39677337648. Its totient is φ = 17634372224.

The previous prime is 28104780763. The next prime is 28104780787. The reversal of 28104780783 is 38708740182.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28104780783 - 2⁹ = 28104780271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28104780787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275537016 + ... + 275537117.

It is an arithmetic number, because the mean of its divisors is an integer number (4959667206).

Almost surely, 2^28104780783 is an apocalyptic number.

28104780783 is a deficient number, since it is larger than the sum of its proper divisors (11572556865).

28104780783 is a wasteful number, since it uses less digits than its factorization.

28104780783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551074153.

The product of its (nonzero) digits is 602112, while the sum is 48.

The spelling of 28104780783 in words is "twenty-eight billion, one hundred four million, seven hundred eighty thousand, seven hundred eighty-three".