18299744 has 12 divisors (see below), whose sum is σ = 36027684. Its totient is φ = 9149856.

The previous prime is 18299737. The next prime is 18299747. The reversal of 18299744 is 44799281.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18299695 and 18299704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18299747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285902 + ... + 285965.

It is an arithmetic number, because the mean of its divisors is an integer number (3002307).

Almost surely, 2^18299744 is an apocalyptic number.

It is an amenable number.

18299744 is a deficient number, since it is larger than the sum of its proper divisors (17727940).

18299744 is an equidigital number, since it uses as much as digits as its factorization.

18299744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571877 (or 571869 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 18299744 is about 4277.8200055636. The cubic root of 18299744 is about 263.5208634119.

The spelling of 18299744 in words is "eighteen million, two hundred ninety-nine thousand, seven hundred forty-four".