20448299 has 4 divisors (see below), whose sum is σ = 20947080. Its totient is φ = 19949520.

The previous prime is 20448293. The next prime is 20448317. The reversal of 20448299 is 99284402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20448299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20448293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249329 + ... + 249410.

It is an arithmetic number, because the mean of its divisors is an integer number (5236770).

Almost surely, 2^20448299 is an apocalyptic number.

20448299 is a deficient number, since it is larger than the sum of its proper divisors (498781).

20448299 is an equidigital number, since it uses as much as digits as its factorization.

20448299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498780.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 20448299 is about 4521.9795444031. The cubic root of 20448299 is about 273.4549120384.

The spelling of 20448299 in words is "twenty million, four hundred forty-eight thousand, two hundred ninety-nine".