28997383 has 2 divisors, whose sum is σ = 28997384. Its totient is φ = 28997382.

The previous prime is 28997377. The next prime is 28997417. The reversal of 28997383 is 38379982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28997383 - 2²¹ = 26900231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28997333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14498691 + 14498692.

It is an arithmetic number, because the mean of its divisors is an integer number (14498692).

Almost surely, 2^28997383 is an apocalyptic number.

28997383 is a deficient number, since it is larger than the sum of its proper divisors (1).

28997383 is an equidigital number, since it uses as much as digits as its factorization.

28997383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 28997383 is about 5384.9218193025. The cubic root of 28997383 is about 307.2224406203. Note that the first 3 decimals are identical.

The spelling of 28997383 in words is "twenty-eight million, nine hundred ninety-seven thousand, three hundred eighty-three".