18059404 has 24 divisors (see below), whose sum is σ = 35412048. Its totient is φ = 7986240.

The previous prime is 18059401. The next prime is 18059411. The reversal of 18059404 is 40495081.

It is a happy number.

It is a super-2 number, since 2×18059404² = 652284145670432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18059401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3919 + ... + 7174.

It is an arithmetic number, because the mean of its divisors is an integer number (1475502).

Almost surely, 2^18059404 is an apocalyptic number.

It is an amenable number.

18059404 is a deficient number, since it is larger than the sum of its proper divisors (17352644).

18059404 is a wasteful number, since it uses less digits than its factorization.

18059404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11145 (or 11143 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 18059404 is about 4249.6357490966. The cubic root of 18059404 is about 262.3621238149.

The spelling of 18059404 in words is "eighteen million, fifty-nine thousand, four hundred four".