18268344 has 48 divisors (see below), whose sum is σ = 49673520. Its totient is φ = 6065280.

The previous prime is 18268339. The next prime is 18268351. The reversal of 18268344 is 44386281.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 18268299 and 18268308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34804 + ... + 35324.

It is an arithmetic number, because the mean of its divisors is an integer number (1034865).

Almost surely, 2^18268344 is an apocalyptic number.

It is an amenable number.

18268344 is an abundant number, since it is smaller than the sum of its proper divisors (31405176).

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

18268344 is a wasteful number, since it uses less digits than its factorization.

18268344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020 (or 1013 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 18268344 is about 4274.1483362186. The cubic root of 18268344 is about 263.3700545205.

The spelling of 18268344 in words is "eighteen million, two hundred sixty-eight thousand, three hundred forty-four".