18048240 has 120 divisors (see below), whose sum is σ = 69290208. Its totient is φ = 4124160.

The previous prime is 18048211. The next prime is 18048269. The reversal of 18048240 is 4284081.

18048240 is a `hidden beast` number, since 180 + 482 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (18048211) and next prime (18048269).

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3250 + ... + 6830.

Almost surely, 2^18048240 is an apocalyptic number.

18048240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18048240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34645104).

18048240 is an abundant number, since it is smaller than the sum of its proper divisors (51241968).

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

18048240 is a wasteful number, since it uses less digits than its factorization.

18048240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607 (or 3598 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 18048240 is about 4248.3220216928. The cubic root of 18048240 is about 262.3080501495.

The spelling of 18048240 in words is "eighteen million, forty-eight thousand, two hundred forty".