28448299 has 4 divisors (see below), whose sum is σ = 31034520. Its totient is φ = 25862080.

The previous prime is 28448281. The next prime is 28448311. The reversal of 28448299 is 99284482.

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

It is a cyclic number.

It is not a de Polignac number, because 28448299 - 2¹⁵ = 28415531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28448279) 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, 1293094 + ... + 1293115.

It is an arithmetic number, because the mean of its divisors is an integer number (7758630).

Almost surely, 2^28448299 is an apocalyptic number.

28448299 is a deficient number, since it is larger than the sum of its proper divisors (2586221).

28448299 is a wasteful number, since it uses less digits than its factorization.

28448299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586220.

The product of its digits is 331776, while the sum is 46.

The square root of 28448299 is about 5333.6946856752. The cubic root of 28448299 is about 305.2709193643.

The spelling of 28448299 in words is "twenty-eight million, four hundred forty-eight thousand, two hundred ninety-nine".