18053430 has 32 divisors (see below), whose sum is σ = 43615584. Its totient is φ = 4782336.

The previous prime is 18053429. The next prime is 18053461. The reversal of 18053430 is 3435081.

It is a self number, because there is not a number n which added to its sum of digits gives 18053430.

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 15 ways as a sum of consecutive naturals, for example, 2794 + ... + 6626.

It is an arithmetic number, because the mean of its divisors is an integer number (1362987).

Almost surely, 2^18053430 is an apocalyptic number.

18053430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18053430 is an abundant number, since it is smaller than the sum of its proper divisors (25562154).

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

18053430 is a wasteful number, since it uses less digits than its factorization.

18053430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 18053430 is about 4248.9328071882. The cubic root of 18053430 is about 262.3331910738. Note that the first 3 decimals are identical.

The spelling of 18053430 in words is "eighteen million, fifty-three thousand, four hundred thirty".