28904733313 has 4 divisors (see below), whose sum is σ = 28929418288. Its totient is φ = 28880048340.

The previous prime is 28904733301. The next prime is 28904733349. The reversal of 28904733313 is 31333740982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28904733313 - 2¹⁷ = 28904602241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28904733313.

It is not an unprimeable number, because it can be changed into a prime (28904733353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12340731 + ... + 12343072.

It is an arithmetic number, because the mean of its divisors is an integer number (7232354572).

Almost surely, 2^28904733313 is an apocalyptic number.

It is an amenable number.

28904733313 is a deficient number, since it is larger than the sum of its proper divisors (24684975).

28904733313 is a wasteful number, since it uses less digits than its factorization.

28904733313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24684974.

The product of its (nonzero) digits is 326592, while the sum is 43.

The spelling of 28904733313 in words is "twenty-eight billion, nine hundred four million, seven hundred thirty-three thousand, three hundred thirteen".