2248728309 has 12 divisors (see below), whose sum is σ = 3248885952. Its totient is φ = 1498818600.

The previous prime is 2248728269. The next prime is 2248728311. The reversal of 2248728309 is 9038278422.

2248728309 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2248728309 - 2⁹ = 2248727797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2248728319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19044 + ... + 69714.

It is an arithmetic number, because the mean of its divisors is an integer number (270740496).

Almost surely, 2^2248728309 is an apocalyptic number.

It is an amenable number.

2248728309 is a deficient number, since it is larger than the sum of its proper divisors (1000157643).

2248728309 is a wasteful number, since it uses less digits than its factorization.

2248728309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55608 (or 55605 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 2248728309 is about 47420.7582077723. The cubic root of 2248728309 is about 1310.1237784873.

The spelling of 2248728309 in words is "two billion, two hundred forty-eight million, seven hundred twenty-eight thousand, three hundred nine".