18230580 has 36 divisors (see below), whose sum is σ = 55299972. Its totient is φ = 4861440.

The previous prime is 18230561. The next prime is 18230591. The reversal of 18230580 is 8503281.

It is a happy number.

18230580 is a `hidden beast` number, since 1 + 82 + 3 + 0 + 580 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2643876 + 15586704 = 1626^2 + 3948^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×18230580³ (a number of 23 digits) contains 333 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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50461 + ... + 50820.

Almost surely, 2^18230580 is an apocalyptic number.

18230580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18230580 is an abundant number, since it is smaller than the sum of its proper divisors (37069392).

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

18230580 is a wasteful number, since it uses less digits than its factorization.

18230580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101296 (or 101291 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 18230580 is about 4269.7283285942. The cubic root of 18230580 is about 263.1884513430.

The spelling of 18230580 in words is "eighteen million, two hundred thirty thousand, five hundred eighty".