2205023440 has 40 divisors (see below), whose sum is σ = 5165839008. Its totient is φ = 875272320.

The previous prime is 2205023423. The next prime is 2205023449. The reversal of 2205023440 is 443205022.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205023449) 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 7 ways as a sum of consecutive naturals, for example, 94722 + ... + 115681.

Almost surely, 2^2205023440 is an apocalyptic number.

2205023440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2205023440 is an abundant number, since it is smaller than the sum of its proper divisors (2960815568).

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

2205023440 is a wasteful number, since it uses less digits than its factorization.

2205023440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210547 (or 210541 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 2205023440 is about 46957.6771146103. The cubic root of 2205023440 is about 1301.5806099748.

Adding to 2205023440 its reverse (443205022), we get a palindrome (2648228462).

The spelling of 2205023440 in words is "two billion, two hundred five million, twenty-three thousand, four hundred forty".