18085460 has 24 divisors (see below), whose sum is σ = 38152296. Its totient is φ = 7201280.

The previous prime is 18085439. The next prime is 18085477. The reversal of 18085460 is 6458081.

It can be written as a sum of positive squares in 4 ways, for example, as 929296 + 17156164 = 964^2 + 4142^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2720 + ... + 6600.

It is an arithmetic number, because the mean of its divisors is an integer number (1589679).

Almost surely, 2^18085460 is an apocalyptic number.

18085460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18085460 is an abundant number, since it is smaller than the sum of its proper divisors (20066836).

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

18085460 is a wasteful number, since it uses less digits than its factorization.

18085460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4123 (or 4121 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 18085460 is about 4252.7003186211. The cubic root of 18085460 is about 262.4882413478.

The spelling of 18085460 in words is "eighteen million, eighty-five thousand, four hundred sixty".