18065572 has 24 divisors (see below), whose sum is σ = 36329216. Its totient is φ = 7699968.

The previous prime is 18065569. The next prime is 18065573. The reversal of 18065572 is 27556081.

It is not an unprimeable number, because it can be changed into a prime (18065573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3733 + ... + 7075.

Almost surely, 2^18065572 is an apocalyptic number.

It is an amenable number.

18065572 is an abundant number, since it is smaller than the sum of its proper divisors (18263644).

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

18065572 is a wasteful number, since it uses less digits than its factorization.

18065572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3547 (or 3545 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 18065572 is about 4250.3613963991. The cubic root of 18065572 is about 262.3919894255.

The spelling of 18065572 in words is "eighteen million, sixty-five thousand, five hundred seventy-two".