81060256 has 24 divisors (see below), whose sum is σ = 160169184. Its totient is φ = 40382400.

The previous prime is 81060247. The next prime is 81060263. The reversal of 81060256 is 65206018.

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 3 ways as a sum of consecutive naturals, for example, 4581 + ... + 13531.

It is an arithmetic number, because the mean of its divisors is an integer number (6673716).

Almost surely, 2^81060256 is an apocalyptic number.

It is an amenable number.

81060256 is a deficient number, since it is larger than the sum of its proper divisors (79108928).

81060256 is a wasteful number, since it uses less digits than its factorization.

81060256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9244 (or 9236 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 81060256 is about 9003.3469332243. The cubic root of 81060256 is about 432.7821336226.

The spelling of 81060256 in words is "eighty-one million, sixty thousand, two hundred fifty-six".