18058730 has 8 divisors (see below), whose sum is σ = 32505732. Its totient is φ = 7223488.

The previous prime is 18058727. The next prime is 18058769. The reversal of 18058730 is 3785081.

It can be written as a sum of positive squares in 2 ways, for example, as 17581249 + 477481 = 4193^2 + 691^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18058730² = 652235458425800, which contains 22 as substring.

It is an unprimeable number.

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, 902927 + ... + 902946.

Almost surely, 2^18058730 is an apocalyptic number.

18058730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18058730 is a deficient number, since it is larger than the sum of its proper divisors (14447002).

18058730 is a wasteful number, since it uses less digits than its factorization.

18058730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805880.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 18058730 is about 4249.5564474425. The cubic root of 18058730 is about 262.3588598779.

The spelling of 18058730 in words is "eighteen million, fifty-eight thousand, seven hundred thirty".