2400005 has 8 divisors (see below), whose sum is σ = 2958072. Its totient is φ = 1867968.

The previous prime is 2400001. The next prime is 2400019. The reversal of 2400005 is 5000042.

It can be written as a sum of positive squares in 4 ways, for example, as 83521 + 2316484 = 289^2 + 1522^2 .

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 2400005 - 2² = 2400001 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400001) 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, 6302 + ... + 6671.

It is an arithmetic number, because the mean of its divisors is an integer number (369759).

2^2400005 is an apocalyptic number.

It is an amenable number.

2400005 is a deficient number, since it is larger than the sum of its proper divisors (558067).

2400005 is a wasteful number, since it uses less digits than its factorization.

2400005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13015.

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 2400005 is about 1549.1949522252. The cubic root of 2400005 is about 133.8866829932.

Adding to 2400005 its reverse (5000042), we get a palindrome (7400047).

The spelling of 2400005 in words is "two million, four hundred thousand, five".