18007704 has 192 divisors, whose sum is σ = 60328800. Its totient is φ = 4942080.

The previous prime is 18007697. The next prime is 18007723. The reversal of 18007704 is 40770081.

It is a super-3 number, since 3×18007704³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 339742 + ... + 339794.

Almost surely, 2^18007704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18007704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30164400).

18007704 is an abundant number, since it is smaller than the sum of its proper divisors (42321096).

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

18007704 is a wasteful number, since it uses less digits than its factorization.

18007704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 18007704 is about 4243.5485150991. The cubic root of 18007704 is about 262.1115233318. Note that the first 3 decimals are identical.

Adding to 18007704 its reverse (40770081), we get a palindrome (58777785).

The spelling of 18007704 in words is "eighteen million, seven thousand, seven hundred four".