2400855 has 16 divisors (see below), whose sum is σ = 4008960. Its totient is φ = 1224608.

The previous prime is 2400851. The next prime is 2400863. The reversal of 2400855 is 5580042.

It is a cyclic number.

It is not a de Polignac number, because 2400855 - 2² = 2400851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400851) 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, 3135 + ... + 3824.

It is an arithmetic number, because the mean of its divisors is an integer number (250560).

2^2400855 is an apocalyptic number.

2400855 is a deficient number, since it is larger than the sum of its proper divisors (1608105).

2400855 is a wasteful number, since it uses less digits than its factorization.

2400855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6990.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2400855 is about 1549.4692639740. The cubic root of 2400855 is about 133.9024871614.

Adding to 2400855 its reverse (5580042), we get a palindrome (7980897).

The spelling of 2400855 in words is "two million, four hundred thousand, eight hundred fifty-five".