28904733349 has 2 divisors, whose sum is σ = 28904733350. Its totient is φ = 28904733348.

The previous prime is 28904733301. The next prime is 28904733353. The reversal of 28904733349 is 94333740982.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14931129249 + 13973604100 = 122193^2 + 118210^2 .

It is a cyclic number.

It is not a de Polignac number, because 28904733349 - 2¹⁵ = 28904700581 is a prime.

It is a super-3 number, since 3×28904733349³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28904733296 and 28904733305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28904733359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14452366674 + 14452366675.

It is an arithmetic number, because the mean of its divisors is an integer number (14452366675).

Almost surely, 2^28904733349 is an apocalyptic number.

It is an amenable number.

28904733349 is a deficient number, since it is larger than the sum of its proper divisors (1).

28904733349 is an equidigital number, since it uses as much as digits as its factorization.

28904733349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3919104, while the sum is 52.

The spelling of 28904733349 in words is "twenty-eight billion, nine hundred four million, seven hundred thirty-three thousand, three hundred forty-nine".