8013857244 has 48 divisors (see below), whose sum is σ = 19310807040. Its totient is φ = 2583961920.

The previous prime is 8013857237. The next prime is 8013857263. The reversal of 8013857244 is 4427583108.

It is a super-2 number, since 2×8013857244² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8013857196 and 8013857205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1320922 + ... + 1326974.

It is an arithmetic number, because the mean of its divisors is an integer number (402308480).

Almost surely, 2^8013857244 is an apocalyptic number.

It is an amenable number.

8013857244 is an abundant number, since it is smaller than the sum of its proper divisors (11296949796).

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

8013857244 is a wasteful number, since it uses less digits than its factorization.

8013857244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9650 (or 9648 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 8013857244 is about 89520.1499328503. The cubic root of 8013857244 is about 2001.1541042269.

The spelling of 8013857244 in words is "eight billion, thirteen million, eight hundred fifty-seven thousand, two hundred forty-four".