2200040 has 16 divisors (see below), whose sum is σ = 4950180. Its totient is φ = 880000.

The previous prime is 2200031. The next prime is 2200043. The reversal of 2200040 is 400022.

It can be written as a sum of positive squares in 2 ways, for example, as 1865956 + 334084 = 1366^2 + 578^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27461 + ... + 27540.

2^2200040 is an apocalyptic number.

2200040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2200040 is an abundant number, since it is smaller than the sum of its proper divisors (2750140).

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

2200040 is a wasteful number, since it uses less digits than its factorization.

2200040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55012 (or 55008 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 2200040 is about 1483.2531813551. The cubic root of 2200040 is about 130.0599329176.

Adding to 2200040 its reverse (400022), we get a palindrome (2600062).

The spelling of 2200040 in words is "two million, two hundred thousand, forty".