18058740 has 192 divisors, whose sum is σ = 63651840. Its totient is φ = 3732480.

The previous prime is 18058727. The next prime is 18058769. The reversal of 18058740 is 4785081.

It is a happy number.

It is a super-2 number, since 2×18058740² = 652236180775200, which contains 22 as substring.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 247344 + ... + 247416.

It is an arithmetic number, because the mean of its divisors is an integer number (331520).

Almost surely, 2^18058740 is an apocalyptic number.

18058740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18058740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31825920).

18058740 is an abundant number, since it is smaller than the sum of its proper divisors (45593100).

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

18058740 is a wasteful number, since it uses less digits than its factorization.

18058740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 18058740 is about 4249.5576240357. The cubic root of 18058740 is about 262.3589083049.

The spelling of 18058740 in words is "eighteen million, fifty-eight thousand, seven hundred forty".