18000476 has 24 divisors (see below), whose sum is σ = 34755504. Its totient is φ = 8104320.

The previous prime is 18000473. The next prime is 18000527. The reversal of 18000476 is 67400081.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18000473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2090 + ... + 6353.

It is an arithmetic number, because the mean of its divisors is an integer number (1448146).

Almost surely, 2^18000476 is an apocalyptic number.

It is an amenable number.

18000476 is a deficient number, since it is larger than the sum of its proper divisors (16755028).

18000476 is a wasteful number, since it uses less digits than its factorization.

18000476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8501 (or 8499 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 18000476 is about 4242.6967838864. The cubic root of 18000476 is about 262.0764495355.

The spelling of 18000476 in words is "eighteen million, four hundred seventy-six", and thus it is an aban number.