12182004 has 18 divisors (see below), whose sum is σ = 30793490. Its totient is φ = 4060656.

The previous prime is 12182003. The next prime is 12182033. The reversal of 12182004 is 40028121.

It can be written as a sum of positive squares in only one way, i.e., 11573604 + 608400 = 3402^2 + 780^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12182003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 169159 + ... + 169230.

Almost surely, 2^12182004 is an apocalyptic number.

It is an amenable number.

12182004 is an abundant number, since it is smaller than the sum of its proper divisors (18611486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12182004 is a wasteful number, since it uses less digits than its factorization.

12182004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338399 (or 338394 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 12182004 is about 3490.2727687102. The cubic root of 12182004 is about 230.0945043272.

The spelling of 12182004 in words is "twelve million, one hundred eighty-two thousand, four".