2240247 has 4 divisors (see below), whose sum is σ = 2987000. Its totient is φ = 1493496.

The previous prime is 2240213. The next prime is 2240267. The reversal of 2240247 is 7420422.

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

It is a de Polignac number, because none of the positive numbers 2^k-2240247 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2240267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373372 + ... + 373377.

It is an arithmetic number, because the mean of its divisors is an integer number (746750).

2^2240247 is an apocalyptic number.

2240247 is a deficient number, since it is larger than the sum of its proper divisors (746753).

2240247 is an equidigital number, since it uses as much as digits as its factorization.

2240247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746752.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 2240247 is about 1496.7454693434. The cubic root of 2240247 is about 130.8474614771.

Adding to 2240247 its reverse (7420422), we get a palindrome (9660669).

The spelling of 2240247 in words is "two million, two hundred forty thousand, two hundred forty-seven".