2400705 has 16 divisors (see below), whose sum is σ = 4268160. Its totient is φ = 1280304.

The previous prime is 2400703. The next prime is 2400709. The reversal of 2400705 is 5070042.

It is a happy number.

It is not a de Polignac number, because 2400705 - 2¹ = 2400703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2400703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8757 + ... + 9026.

It is an arithmetic number, because the mean of its divisors is an integer number (266760).

2^2400705 is an apocalyptic number.

It is an amenable number.

2400705 is a deficient number, since it is larger than the sum of its proper divisors (1867455).

2400705 is a wasteful number, since it uses less digits than its factorization.

2400705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17797 (or 17791 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 2400705 is about 1549.4208595472. The cubic root of 2400705 is about 133.8996984616.

Adding to 2400705 its reverse (5070042), we get a palindrome (7470747).

The spelling of 2400705 in words is "two million, four hundred thousand, seven hundred five".