18010856 has 24 divisors (see below), whose sum is σ = 34988070. Its totient is φ = 8691648.

The previous prime is 18010829. The next prime is 18010877. The reversal of 18010856 is 65801081.

It can be written as a sum of positive squares in 3 ways, for example, as 10666756 + 7344100 = 3266^2 + 2710^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

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 5 ways as a sum of consecutive naturals, for example, 5390 + ... + 8066.

Almost surely, 2^18010856 is an apocalyptic number.

It is an amenable number.

18010856 is a deficient number, since it is larger than the sum of its proper divisors (16977214).

18010856 is a wasteful number, since it uses less digits than its factorization.

18010856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741 (or 2708 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 18010856 is about 4243.9198861430. The cubic root of 18010856 is about 262.1268154410.

The spelling of 18010856 in words is "eighteen million, ten thousand, eight hundred fifty-six".