28944653 has 2 divisors, whose sum is σ = 28944654. Its totient is φ = 28944652.

The previous prime is 28944637. The next prime is 28944679. The reversal of 28944653 is 35644982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22401289 + 6543364 = 4733^2 + 2558^2 .

It is a cyclic number.

It is not a de Polignac number, because 28944653 - 2⁴ = 28944637 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28944653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28944053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14472326 + 14472327.

It is an arithmetic number, because the mean of its divisors is an integer number (14472327).

Almost surely, 2^28944653 is an apocalyptic number.

It is an amenable number.

28944653 is a deficient number, since it is larger than the sum of its proper divisors (1).

28944653 is an equidigital number, since it uses as much as digits as its factorization.

28944653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 41.

The square root of 28944653 is about 5380.0235129598. The cubic root of 28944653 is about 307.0361057741.

The spelling of 28944653 in words is "twenty-eight million, nine hundred forty-four thousand, six hundred fifty-three".