18061284 has 12 divisors (see below), whose sum is σ = 42143024. Its totient is φ = 6020424.

The previous prime is 18061283. The next prime is 18061289. The reversal of 18061284 is 48216081.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (18061283) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 752542 + ... + 752565.

Almost surely, 2^18061284 is an apocalyptic number.

It is an amenable number.

18061284 is an abundant number, since it is smaller than the sum of its proper divisors (24081740).

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

18061284 is a wasteful number, since it uses less digits than its factorization.

18061284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505114 (or 1505112 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 18061284 is about 4249.8569387686. The cubic root of 18061284 is about 262.3712275424.

The spelling of 18061284 in words is "eighteen million, sixty-one thousand, two hundred eighty-four".