18340448 has 48 divisors (see below), whose sum is σ = 42293664. Its totient is φ = 7664640.

The previous prime is 18340429. The next prime is 18340457. The reversal of 18340448 is 84404381.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 8186 + ... + 10182.

It is an arithmetic number, because the mean of its divisors is an integer number (881118).

Almost surely, 2^18340448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18340448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21146832).

18340448 is an abundant number, since it is smaller than the sum of its proper divisors (23953216).

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

18340448 is a wasteful number, since it uses less digits than its factorization.

18340448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055 (or 2047 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 18340448 is about 4282.5749263732. The cubic root of 18340448 is about 263.7161013013.

The spelling of 18340448 in words is "eighteen million, three hundred forty thousand, four hundred forty-eight".