8252237644 has 24 divisors (see below), whose sum is σ = 16590001568. Its totient is φ = 3518346240.

The previous prime is 8252237633. The next prime is 8252237647. The reversal of 8252237644 is 4467322528.

It is a super-2 number, since 2×8252237644² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8252237644.

It is not an unprimeable number, because it can be changed into a prime (8252237647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758127 + ... + 768934.

Almost surely, 2^8252237644 is an apocalyptic number.

It is an amenable number.

8252237644 is an abundant number, since it is smaller than the sum of its proper divisors (8337763924).

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

8252237644 is a wasteful number, since it uses less digits than its factorization.

8252237644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527265 (or 1527263 counting only the distinct ones).

The product of its digits is 645120, while the sum is 43.

The square root of 8252237644 is about 90841.8276126147. The cubic root of 8252237644 is about 2020.8026777665.

The spelling of 8252237644 in words is "eight billion, two hundred fifty-two million, two hundred thirty-seven thousand, six hundred forty-four".