18058828 has 12 divisors (see below), whose sum is σ = 33462072. Its totient is φ = 8498240.

The previous prime is 18058823. The next prime is 18058829. The reversal of 18058828 is 82885081.

It is a super-2 number, since 2×18058828² = 652242537467168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18058823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132718 + ... + 132853.

It is an arithmetic number, because the mean of its divisors is an integer number (2788506).

Almost surely, 2^18058828 is an apocalyptic number.

It is an amenable number.

18058828 is a deficient number, since it is larger than the sum of its proper divisors (15403244).

18058828 is a wasteful number, since it uses less digits than its factorization.

18058828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265592 (or 265590 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 40.

The square root of 18058828 is about 4249.5679780420. The cubic root of 18058828 is about 262.3593344614.

The spelling of 18058828 in words is "eighteen million, fifty-eight thousand, eight hundred twenty-eight".