18367968 has 48 divisors (see below), whose sum is σ = 48895056. Its totient is φ = 6036480.

The previous prime is 18367967. The next prime is 18368029. The reversal of 18367968 is 86976381.

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 (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18367963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5698 + ... + 8318.

It is an arithmetic number, because the mean of its divisors is an integer number (1018647).

Almost surely, 2^18367968 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 18367968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24447528).

18367968 is an abundant number, since it is smaller than the sum of its proper divisors (30527088).

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

18367968 is a wasteful number, since it uses less digits than its factorization.

18367968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707 (or 2699 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 18367968 is about 4285.7867422446. The cubic root of 18367968 is about 263.8479381421.

The spelling of 18367968 in words is "eighteen million, three hundred sixty-seven thousand, nine hundred sixty-eight".