18482240 has 112 divisors (see below), whose sum is σ = 51889152. Its totient is φ = 6137856.

The previous prime is 18482239. The next prime is 18482257. The reversal of 18482240 is 4228481.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82769 + ... + 82991.

It is an arithmetic number, because the mean of its divisors is an integer number (463296).

Almost surely, 2^18482240 is an apocalyptic number.

18482240 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 18482240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25944576).

18482240 is an abundant number, since it is smaller than the sum of its proper divisors (33406912).

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

18482240 is a wasteful number, since it uses less digits than its factorization.

18482240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 18482240 is about 4299.0975797253. The cubic root of 18482240 is about 264.3939633781.

The spelling of 18482240 in words is "eighteen million, four hundred eighty-two thousand, two hundred forty".