18248544 has 48 divisors (see below), whose sum is σ = 53227440. Its totient is φ = 6082560.

The previous prime is 18248539. The next prime is 18248551. The reversal of 18248544 is 44584281.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 18248499 and 18248508.

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 7 ways as a sum of consecutive naturals, for example, 9697 + ... + 11424.

It is an arithmetic number, because the mean of its divisors is an integer number (1108905).

Almost surely, 2^18248544 is an apocalyptic number.

It is an amenable number.

18248544 is an abundant number, since it is smaller than the sum of its proper divisors (34978896).

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

18248544 is a wasteful number, since it uses less digits than its factorization.

18248544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21140 (or 21126 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 18248544 is about 4271.8314573494. The cubic root of 18248544 is about 263.2748696077.

The spelling of 18248544 in words is "eighteen million, two hundred forty-eight thousand, five hundred forty-four".