18058780 has 24 divisors (see below), whose sum is σ = 38026800. Its totient is φ = 7203840.

The previous prime is 18058769. The next prime is 18058783. The reversal of 18058780 is 8785081.

It is a super-2 number, since 2×18058780² = 652239070176800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18058783) 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 7 ways as a sum of consecutive naturals, for example, 7975 + ... + 9985.

It is an arithmetic number, because the mean of its divisors is an integer number (1584450).

Almost surely, 2^18058780 is an apocalyptic number.

18058780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18058780 is an abundant number, since it is smaller than the sum of its proper divisors (19968020).

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

18058780 is a wasteful number, since it uses less digits than its factorization.

18058780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469 (or 2467 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 18058780 is about 4249.5623304053. The cubic root of 18058780 is about 262.3591020125.

It can be divided in two parts, 1805 and 8780, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 18058780 in words is "eighteen million, fifty-eight thousand, seven hundred eighty".