18481344 has 56 divisors (see below), whose sum is σ = 55888128. Its totient is φ = 5280000.

The previous prime is 18481321. The next prime is 18481369. The reversal of 18481344 is 44318481.

It is a tau number, because it is divible by the number of its divisors (56).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5532 + ... + 8219.

Almost surely, 2^18481344 is an apocalyptic number.

18481344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18481344 is an abundant number, since it is smaller than the sum of its proper divisors (37406784).

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

18481344 is a wasteful number, since it uses less digits than its factorization.

18481344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13773 (or 13763 counting only the distinct ones).

The product of its digits is 12288, while the sum is 33.

The square root of 18481344 is about 4298.9933705462. The cubic root of 18481344 is about 264.3896907932.

The spelling of 18481344 in words is "eighteen million, four hundred eighty-one thousand, three hundred forty-four".