2040556 has 36 divisors (see below), whose sum is σ = 4309200. Its totient is φ = 842016.

The previous prime is 2040551. The next prime is 2040557. The reversal of 2040556 is 6550402.

It is not an unprimeable number, because it can be changed into a prime (2040551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5505 + ... + 5863.

It is an arithmetic number, because the mean of its divisors is an integer number (119700).

2^2040556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2040556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2154600).

2040556 is an abundant number, since it is smaller than the sum of its proper divisors (2268644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2040556 is a wasteful number, since it uses less digits than its factorization.

2040556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 397 counting only the distinct ones).

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

The square root of 2040556 is about 1428.4803113799. The cubic root of 2040556 is about 126.8380352084.

Adding to 2040556 its reverse (6550402), we get a palindrome (8590958).

The spelling of 2040556 in words is "two million, forty thousand, five hundred fifty-six".