8217444252 has 12 divisors (see below), whose sum is σ = 19174036616. Its totient is φ = 2739148080.

The previous prime is 8217444227. The next prime is 8217444271. The reversal of 8217444252 is 2524447128.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 8217444252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342393499 + ... + 342393522.

Almost surely, 2^8217444252 is an apocalyptic number.

It is an amenable number.

8217444252 is an abundant number, since it is smaller than the sum of its proper divisors (10956592364).

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

8217444252 is a wasteful number, since it uses less digits than its factorization.

8217444252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684787028 (or 684787026 counting only the distinct ones).

The product of its digits is 143360, while the sum is 39.

The square root of 8217444252 is about 90650.1199778577. The cubic root of 8217444252 is about 2017.9586157381.

The spelling of 8217444252 in words is "eight billion, two hundred seventeen million, four hundred forty-four thousand, two hundred fifty-two".