18873230 has 32 divisors (see below), whose sum is σ = 36529056. Its totient is φ = 6994944.

The previous prime is 18873227. The next prime is 18873299. The reversal of 18873230 is 3237881.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10562 + ... + 12218.

It is an arithmetic number, because the mean of its divisors is an integer number (1141533).

Almost surely, 2^18873230 is an apocalyptic number.

18873230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18873230 is a deficient number, since it is larger than the sum of its proper divisors (17655826).

18873230 is a wasteful number, since it uses less digits than its factorization.

18873230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 18873230 is about 4344.3330903604. Note that the first 3 decimals coincide. The cubic root of 18873230 is about 266.2453781883.

The spelling of 18873230 in words is "eighteen million, eight hundred seventy-three thousand, two hundred thirty".