2204040400 has 30 divisors (see below), whose sum is σ = 5295208022. Its totient is φ = 881616000.

The previous prime is 2204040373. The next prime is 2204040407. The reversal of 2204040400 is 40404022.

It can be written as a sum of positive squares in 3 ways, for example, as 218803264 + 1985237136 = 14792^2 + 44556^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2204040407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2754651 + ... + 2755450.

Almost surely, 2^2204040400 is an apocalyptic number.

2204040400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2204040400 is an abundant number, since it is smaller than the sum of its proper divisors (3091167622).

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

2204040400 is a wasteful number, since it uses less digits than its factorization.

2204040400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5510119 (or 5510108 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 2204040400 is about 46947.2086497163. The cubic root of 2204040400 is about 1301.3871583665.

Adding to 2204040400 its reverse (40404022), we get a palindrome (2244444422).

It can be divided in two parts, 2 and 204040400, that added together give a palindrome (204040402).

The spelling of 2204040400 in words is "two billion, two hundred four million, forty thousand, four hundred".