2243519720 has 64 divisors (see below), whose sum is σ = 5459847120. Its totient is φ = 824776704.

The previous prime is 2243519687. The next prime is 2243519737. The reversal of 2243519720 is 279153422.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 133587364 + 2109932356 = 11558^2 + 45934^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111902 + ... + 130418.

Almost surely, 2^2243519720 is an apocalyptic number.

2243519720 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 2243519720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2729923560).

2243519720 is an abundant number, since it is smaller than the sum of its proper divisors (3216327400).

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

2243519720 is a wasteful number, since it uses less digits than its factorization.

2243519720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18774 (or 18770 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 2243519720 is about 47365.8074986588. The cubic root of 2243519720 is about 1309.1114772009. Note that the first 3 decimals are identical.

The spelling of 2243519720 in words is "two billion, two hundred forty-three million, five hundred nineteen thousand, seven hundred twenty".