18344120 has 32 divisors (see below), whose sum is σ = 43448400. Its totient is φ = 6951168.

The previous prime is 18344107. The next prime is 18344141. The reversal of 18344120 is 2144381.

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 7 ways as a sum of consecutive naturals, for example, 11309 + ... + 12828.

Almost surely, 2^18344120 is an apocalyptic number.

18344120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18344120 is an abundant number, since it is smaller than the sum of its proper divisors (25104280).

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

18344120 is a wasteful number, since it uses less digits than its factorization.

18344120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24167 (or 24163 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 18344120 is about 4283.0036189571. The cubic root of 18344120 is about 263.7336999428.

The spelling of 18344120 in words is "eighteen million, three hundred forty-four thousand, one hundred twenty".