18279768 has 64 divisors (see below), whose sum is σ = 50450400. Its totient is φ = 5483520.

The previous prime is 18279761. The next prime is 18279769. The reversal of 18279768 is 86797281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18279761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12078 + ... + 13506.

Almost surely, 2^18279768 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 18279768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25225200).

18279768 is an abundant number, since it is smaller than the sum of its proper divisors (32170632).

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

18279768 is a wasteful number, since it uses less digits than its factorization.

18279768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492 (or 1488 counting only the distinct ones).

The product of its digits is 338688, while the sum is 48.

The square root of 18279768 is about 4275.4845339447. The cubic root of 18279768 is about 263.4249420454.

The spelling of 18279768 in words is "eighteen million, two hundred seventy-nine thousand, seven hundred sixty-eight".