8373437856 has 288 divisors, whose sum is σ = 29884982400. Its totient is φ = 2251431936.

The previous prime is 8373437827. The next prime is 8373437857. The reversal of 8373437856 is 6587343738.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×8373437856² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8373437857) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 920820 + ... + 929868.

It is an arithmetic number, because the mean of its divisors is an integer number (103767300).

Almost surely, 2^8373437856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8373437856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14942491200).

8373437856 is an abundant number, since it is smaller than the sum of its proper divisors (21511544544).

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

8373437856 is a wasteful number, since it uses less digits than its factorization.

8373437856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9098 (or 9078 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 54.

The square root of 8373437856 is about 91506.4907861732. The cubic root of 8373437856 is about 2030.6477792274.

The spelling of 8373437856 in words is "eight billion, three hundred seventy-three million, four hundred thirty-seven thousand, eight hundred fifty-six".