18069572 has 12 divisors (see below), whose sum is σ = 33481980. Its totient is φ = 8503296.

The previous prime is 18069563. The next prime is 18069577. The reversal of 18069572 is 27596081.

It can be written as a sum of positive squares in 2 ways, for example, as 9449476 + 8620096 = 3074^2 + 2936^2 .

It is not an unprimeable number, because it can be changed into a prime (18069577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132797 + ... + 132932.

It is an arithmetic number, because the mean of its divisors is an integer number (2790165).

Almost surely, 2^18069572 is an apocalyptic number.

It is an amenable number.

18069572 is a deficient number, since it is larger than the sum of its proper divisors (15412408).

18069572 is a wasteful number, since it uses less digits than its factorization.

18069572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265750 (or 265748 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 18069572 is about 4250.8319185778. The cubic root of 18069572 is about 262.4113538923.

The spelling of 18069572 in words is "eighteen million, sixty-nine thousand, five hundred seventy-two".