2244635220 has 96 divisors (see below), whose sum is σ = 6358746240. Its totient is φ = 591585280.

The previous prime is 2244635219. The next prime is 2244635227. The reversal of 2244635220 is 225364422.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2244635227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2774176 + ... + 2774984.

It is an arithmetic number, because the mean of its divisors is an integer number (66236940).

Almost surely, 2^2244635220 is an apocalyptic number.

2244635220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2244635220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3179373120).

2244635220 is an abundant number, since it is smaller than the sum of its proper divisors (4114111020).

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

2244635220 is a wasteful number, since it uses less digits than its factorization.

2244635220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305 (or 1303 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 2244635220 is about 47377.5814072437. The cubic root of 2244635220 is about 1309.3284089383.

Adding to 2244635220 its reverse (225364422), we get a palindrome (2469999642).

The spelling of 2244635220 in words is "two billion, two hundred forty-four million, six hundred thirty-five thousand, two hundred twenty".