18440124 has 12 divisors (see below), whose sum is σ = 43026984. Its totient is φ = 6146704.

The previous prime is 18440111. The next prime is 18440129. The reversal of 18440124 is 42104481.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 18440094 and 18440103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18440129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768327 + ... + 768350.

It is an arithmetic number, because the mean of its divisors is an integer number (3585582).

Almost surely, 2^18440124 is an apocalyptic number.

It is an amenable number.

18440124 is an abundant number, since it is smaller than the sum of its proper divisors (24586860).

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

18440124 is a wasteful number, since it uses less digits than its factorization.

18440124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536684 (or 1536682 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 18440124 is about 4294.1965488319. The cubic root of 18440124 is about 264.1929833214.

The spelling of 18440124 in words is "eighteen million, four hundred forty thousand, one hundred twenty-four".