2217539072 has 80 divisors (see below), whose sum is σ = 5150027520. Its totient is φ = 934176768.

The previous prime is 2217539047. The next prime is 2217539083. The reversal of 2217539072 is 2709357122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206213 + ... + 216699.

It is an arithmetic number, because the mean of its divisors is an integer number (64375344).

Almost surely, 2^2217539072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2217539072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2575013760).

2217539072 is an abundant number, since it is smaller than the sum of its proper divisors (2932488448).

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

2217539072 is an equidigital number, since it uses as much as digits as its factorization.

2217539072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10571 (or 10555 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 2217539072 is about 47090.7535722248. The cubic root of 2217539072 is about 1304.0385400179.

The spelling of 2217539072 in words is "two billion, two hundred seventeen million, five hundred thirty-nine thousand, seventy-two".