18411472 has 10 divisors (see below), whose sum is σ = 35672258. Its totient is φ = 9205728.

The previous prime is 18411467. The next prime is 18411479. The reversal of 18411472 is 27411481.

It can be written as a sum of positive squares in only one way, i.e., 15397776 + 3013696 = 3924^2 + 1736^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18411472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18411479) 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 as a sum of consecutive naturals, namely, 575343 + ... + 575374.

Almost surely, 2^18411472 is an apocalyptic number.

It is an amenable number.

18411472 is a deficient number, since it is larger than the sum of its proper divisors (17260786).

18411472 is a wasteful number, since it uses less digits than its factorization.

18411472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150725 (or 1150719 counting only the distinct ones).

The product of its digits is 1792, while the sum is 28.

The square root of 18411472 is about 4290.8591214348. The cubic root of 18411472 is about 264.0560793019.

Subtracting 18411472 from its reverse (27411481), we obtain a palindrome (9000009).

The spelling of 18411472 in words is "eighteen million, four hundred eleven thousand, four hundred seventy-two".