2400247 has 8 divisors (see below), whose sum is σ = 2555712. Its totient is φ = 2246400.

The previous prime is 2400221. The next prime is 2400253. The reversal of 2400247 is 7420042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2400247 - 2¹⁹ = 1875959 is a prime.

It is a super-2 number, since 2×2400247² = 11522371322018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4347 + ... + 4867.

It is an arithmetic number, because the mean of its divisors is an integer number (319464).

2^2400247 is an apocalyptic number.

2400247 is a deficient number, since it is larger than the sum of its proper divisors (155465).

2400247 is a wasteful number, since it uses less digits than its factorization.

2400247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 2400247 is about 1549.2730553392. The cubic root of 2400247 is about 133.8911829127.

Adding to 2400247 its reverse (7420042), we get a palindrome (9820289).

The spelling of 2400247 in words is "two million, four hundred thousand, two hundred forty-seven".