2216635572 has 24 divisors (see below), whose sum is σ = 5217924096. Its totient is φ = 732339328.

The previous prime is 2216635567. The next prime is 2216635609. The reversal of 2216635572 is 2755366122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2216635572.

It is a congruent number.

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, 815988 + ... + 818699.

It is an arithmetic number, because the mean of its divisors is an integer number (217413504).

Almost surely, 2^2216635572 is an apocalyptic number.

It is an amenable number.

2216635572 is an abundant number, since it is smaller than the sum of its proper divisors (3001288524).

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

2216635572 is a wasteful number, since it uses less digits than its factorization.

2216635572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634807 (or 1634805 counting only the distinct ones).

The product of its digits is 151200, while the sum is 39.

The square root of 2216635572 is about 47081.1594164800. The cubic root of 2216635572 is about 1303.8614129067.

The spelling of 2216635572 in words is "two billion, two hundred sixteen million, six hundred thirty-five thousand, five hundred seventy-two".