2430247 has 4 divisors (see below), whose sum is σ = 2434456. Its totient is φ = 2426040.

The previous prime is 2430227. The next prime is 2430251. The reversal of 2430247 is 7420342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7420342 = 2 ⋅3710171.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2430247 is a prime.

It is a super-2 number, since 2×2430247² = 11812200962018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2430217) 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, 1068 + ... + 2449.

It is an arithmetic number, because the mean of its divisors is an integer number (608614).

2^2430247 is an apocalyptic number.

2430247 is a deficient number, since it is larger than the sum of its proper divisors (4209).

2430247 is an equidigital number, since it uses as much as digits as its factorization.

2430247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4208.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 2430247 is about 1558.9249500858. The cubic root of 2430247 is about 134.4466974151.

Adding to 2430247 its reverse (7420342), we get a palindrome (9850589).

The spelling of 2430247 in words is "two million, four hundred thirty thousand, two hundred forty-seven".