18004830 has 32 divisors (see below), whose sum is σ = 43352064. Its totient is φ = 4785696.

The previous prime is 18004813. The next prime is 18004871. The reversal of 18004830 is 3840081.

It is a self number, because there is not a number n which added to its sum of digits gives 18004830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10707 + ... + 12273.

It is an arithmetic number, because the mean of its divisors is an integer number (1354752).

Almost surely, 2^18004830 is an apocalyptic number.

18004830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18004830 is an abundant number, since it is smaller than the sum of its proper divisors (25347234).

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

18004830 is a wasteful number, since it uses less digits than its factorization.

18004830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 18004830 is about 4243.2098698980. The cubic root of 18004830 is about 262.0975784003.

The spelling of 18004830 in words is "eighteen million, four thousand, eight hundred thirty".