18730704 has 20 divisors (see below), whose sum is σ = 48387776. Its totient is φ = 6243552.

The previous prime is 18730703. The next prime is 18730709. The reversal of 18730704 is 40703781.

It is a happy number.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18730703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195064 + ... + 195159.

Almost surely, 2^18730704 is an apocalyptic number.

It is an amenable number.

18730704 is an abundant number, since it is smaller than the sum of its proper divisors (29657072).

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

18730704 is a wasteful number, since it uses less digits than its factorization.

18730704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390234 (or 390228 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 18730704 is about 4327.8983352200. The cubic root of 18730704 is about 265.5734774164.

The spelling of 18730704 in words is "eighteen million, seven hundred thirty thousand, seven hundred four".