28011634441 has 24 divisors (see below), whose sum is σ = 34796010240. Its totient is φ = 22434199200.

The previous prime is 28011634421. The next prime is 28011634459. The reversal of 28011634441 is 14443611082.

It is not a de Polignac number, because 28011634441 - 2⁹ = 28011633929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28011634397 and 28011634406.

It is not an unprimeable number, because it can be changed into a prime (28011634421) 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 23 ways as a sum of consecutive naturals, for example, 273895 + ... + 361996.

It is an arithmetic number, because the mean of its divisors is an integer number (1449833760).

Almost surely, 2^28011634441 is an apocalyptic number.

It is an amenable number.

28011634441 is a deficient number, since it is larger than the sum of its proper divisors (6784375799).

28011634441 is a wasteful number, since it uses less digits than its factorization.

28011634441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635965 (or 635958 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 28011634441 in words is "twenty-eight billion, eleven million, six hundred thirty-four thousand, four hundred forty-one".