8081856 has 70 divisors (see below), whose sum is σ = 23972520. Its totient is φ = 2692224.

The previous prime is 8081849. The next prime is 8081929. The reversal of 8081856 is 6581808.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 8081856.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4405 + ... + 5963.

Almost surely, 2^8081856 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 8081856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11986260).

8081856 is an abundant number, since it is smaller than the sum of its proper divisors (15890664).

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

8081856 is a wasteful number, since it uses less digits than its factorization.

8081856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583 (or 1564 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 8081856 is about 2842.8605312255. The cubic root of 8081856 is about 200.6798199394.

The spelling of 8081856 in words is "eight million, eighty-one thousand, eight hundred fifty-six".