28338467789 has 8 divisors (see below), whose sum is σ = 28624359960. Its totient is φ = 28052680000.

The previous prime is 28338467777. The next prime is 28338467803. The reversal of 28338467789 is 98776483382.

It can be written as a sum of positive squares in 4 ways, for example, as 4354680100 + 23983787689 = 65990^2 + 154867^2 .

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 28338467789 - 2¹² = 28338463693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28338467749) 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 7 ways as a sum of consecutive naturals, for example, 593207 + ... + 639195.

It is an arithmetic number, because the mean of its divisors is an integer number (3578044995).

Almost surely, 2^28338467789 is an apocalyptic number.

It is an amenable number.

28338467789 is a deficient number, since it is larger than the sum of its proper divisors (285892171).

28338467789 is a wasteful number, since it uses less digits than its factorization.

28338467789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52191.

The product of its digits is 97542144, while the sum is 65.

The spelling of 28338467789 in words is "twenty-eight billion, three hundred thirty-eight million, four hundred sixty-seven thousand, seven hundred eighty-nine".