18005476 has 12 divisors (see below), whose sum is σ = 32242672. Its totient is φ = 8793288.

The previous prime is 18005473. The next prime is 18005497. The reversal of 18005476 is 67450081.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18005473) 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, 52170 + ... + 52513.

Almost surely, 2^18005476 is an apocalyptic number.

It is an amenable number.

18005476 is a deficient number, since it is larger than the sum of its proper divisors (14237196).

18005476 is a wasteful number, since it uses less digits than its factorization.

18005476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104730 (or 104728 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 18005476 is about 4243.2859908330. The cubic root of 18005476 is about 262.1007129853.

It can be divided in two parts, 18005 and 476, that added together give a palindrome (18481).

The spelling of 18005476 in words is "eighteen million, five thousand, four hundred seventy-six".