18089704 has 8 divisors (see below), whose sum is σ = 33918210. Its totient is φ = 9044848.

The previous prime is 18089693. The next prime is 18089723. The reversal of 18089704 is 40798081.

It can be written as a sum of positive squares in only one way, i.e., 12320100 + 5769604 = 3510^2 + 2402^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130599 + ... + 1130614.

Almost surely, 2^18089704 is an apocalyptic number.

It is an amenable number.

18089704 is a deficient number, since it is larger than the sum of its proper divisors (15828506).

18089704 is a wasteful number, since it uses less digits than its factorization.

18089704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261219 (or 2261215 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 18089704 is about 4253.1992664346. The cubic root of 18089704 is about 262.5087718913.

The spelling of 18089704 in words is "eighteen million, eighty-nine thousand, seven hundred four".