2217487952 has 20 divisors (see below), whose sum is σ = 4401174036. Its totient is φ = 1081701120.

The previous prime is 2217487933. The next prime is 2217487963. The reversal of 2217487952 is 2597847122.

It can be written as a sum of positive squares in 2 ways, for example, as 325585936 + 1891902016 = 18044^2 + 43496^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2217487897 and 2217487906.

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 3 ways as a sum of consecutive naturals, for example, 1689503 + ... + 1690814.

Almost surely, 2^2217487952 is an apocalyptic number.

It is an amenable number.

2217487952 is a deficient number, since it is larger than the sum of its proper divisors (2183686084).

2217487952 is a wasteful number, since it uses less digits than its factorization.

2217487952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3380366 (or 3380360 counting only the distinct ones).

The product of its digits is 564480, while the sum is 47.

The square root of 2217487952 is about 47090.2107873813. The cubic root of 2217487952 is about 1304.0285194560.

The spelling of 2217487952 in words is "two billion, two hundred seventeen million, four hundred eighty-seven thousand, nine hundred fifty-two".