18061704 has 112 divisors (see below), whose sum is σ = 53775600. Its totient is φ = 5668704.

The previous prime is 18061699. The next prime is 18061721. The reversal of 18061704 is 40716081.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 110727 + ... + 110889.

Almost surely, 2^18061704 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 18061704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26887800).

18061704 is an abundant number, since it is smaller than the sum of its proper divisors (35713896).

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

18061704 is a wasteful number, since it uses less digits than its factorization.

18061704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 18061704 is about 4249.9063519094. The cubic root of 18061704 is about 262.3732612676.

Adding to 18061704 its reverse (40716081), we get a palindrome (58777785).

The spelling of 18061704 in words is "eighteen million, sixty-one thousand, seven hundred four".