2261530216 has 32 divisors (see below), whose sum is σ = 4681605600. Its totient is φ = 1015579840.

The previous prime is 2261530181. The next prime is 2261530237. The reversal of 2261530216 is 6120351622.

It is a super-2 number, since 2×2261530216² = 10229037835762013312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147511 + ... + 162118.

It is an arithmetic number, because the mean of its divisors is an integer number (146300175).

Almost surely, 2^2261530216 is an apocalyptic number.

It is an amenable number.

2261530216 is an abundant number, since it is smaller than the sum of its proper divisors (2420075384).

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

2261530216 is a wasteful number, since it uses less digits than its factorization.

2261530216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309729 (or 309725 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2261530216 is about 47555.5487403941. The cubic root of 2261530216 is about 1312.6052336606.

Adding to 2261530216 its reverse (6120351622), we get a palindrome (8381881838).

The spelling of 2261530216 in words is "two billion, two hundred sixty-one million, five hundred thirty thousand, two hundred sixteen".