18342816 has 24 divisors (see below), whose sum is σ = 48150144. Its totient is φ = 6114240.

The previous prime is 18342803. The next prime is 18342817. The reversal of 18342816 is 61824381.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is not an unprimeable number, because it can be changed into a prime (18342817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95440 + ... + 95631.

It is an arithmetic number, because the mean of its divisors is an integer number (2006256).

Almost surely, 2^18342816 is an apocalyptic number.

18342816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18342816 is an abundant number, since it is smaller than the sum of its proper divisors (29807328).

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

18342816 is a wasteful number, since it uses less digits than its factorization.

18342816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191084 (or 191076 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 18342816 is about 4282.8513866348. The cubic root of 18342816 is about 263.7274505852.

The spelling of 18342816 in words is "eighteen million, three hundred forty-two thousand, eight hundred sixteen".