80281856 has 72 divisors (see below), whose sum is σ = 167661144. Its totient is φ = 38338560.

The previous prime is 80281849. The next prime is 80281919. The reversal of 80281856 is 65818208.

It can be written as a sum of positive squares in 4 ways, for example, as 2560000 + 77721856 = 1600^2 + 8816^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 827600 + ... + 827696.

It is an arithmetic number, because the mean of its divisors is an integer number (2328627).

Almost surely, 2^80281856 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 80281856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83830572).

80281856 is an abundant number, since it is smaller than the sum of its proper divisors (87379288).

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

80281856 is an equidigital number, since it uses as much as digits as its factorization.

80281856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 80281856 is about 8960.0142857029. The cubic root of 80281856 is about 431.3923785010.

The spelling of 80281856 in words is "eighty million, two hundred eighty-one thousand, eight hundred fifty-six".