2400556 has 24 divisors (see below), whose sum is σ = 4445280. Its totient is φ = 1132032.

The previous prime is 2400551. The next prime is 2400557. The reversal of 2400556 is 6550042.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400551) 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, 8790 + ... + 9058.

It is an arithmetic number, because the mean of its divisors is an integer number (185220).

2^2400556 is an apocalyptic number.

It is an amenable number.

2400556 is a deficient number, since it is larger than the sum of its proper divisors (2044724).

2400556 is a wasteful number, since it uses less digits than its factorization.

2400556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 2400556 is about 1549.3727763195. The cubic root of 2400556 is about 133.8969282381.

Adding to 2400556 its reverse (6550042), we get a palindrome (8950598).

The spelling of 2400556 in words is "two million, four hundred thousand, five hundred fifty-six".