18528472 has 8 divisors (see below), whose sum is σ = 34740900. Its totient is φ = 9264232.

The previous prime is 18528467. The next prime is 18528479. The reversal of 18528472 is 27482581.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18528479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1158022 + ... + 1158037.

Almost surely, 2^18528472 is an apocalyptic number.

It is an amenable number.

18528472 is a deficient number, since it is larger than the sum of its proper divisors (16212428).

18528472 is a wasteful number, since it uses less digits than its factorization.

18528472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316065 (or 2316061 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 18528472 is about 4304.4711638017. The cubic root of 18528472 is about 264.6142340058.

The spelling of 18528472 in words is "eighteen million, five hundred twenty-eight thousand, four hundred seventy-two".