2248729 has 4 divisors (see below), whose sum is σ = 2569984. Its totient is φ = 1927476.

The previous prime is 2248723. The next prime is 2248739. The reversal of 2248729 is 9278422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2248729 - 2¹⁹ = 1724441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2248694 and 2248703.

It is not an unprimeable number, because it can be changed into a prime (2248723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160617 + ... + 160630.

It is an arithmetic number, because the mean of its divisors is an integer number (642496).

2^2248729 is an apocalyptic number.

It is an amenable number.

2248729 is a deficient number, since it is larger than the sum of its proper divisors (321255).

2248729 is an equidigital number, since it uses as much as digits as its factorization.

2248729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321254.

The product of its digits is 16128, while the sum is 34.

The square root of 2248729 is about 1499.5762734853. The cubic root of 2248729 is about 131.0123912681.

The spelling of 2248729 in words is "two million, two hundred forty-eight thousand, seven hundred twenty-nine".