18254144 has 14 divisors (see below), whose sum is σ = 36223194. Its totient is φ = 9127040.

The previous prime is 18254099. The next prime is 18254153. The reversal of 18254144 is 44145281.

It can be written as a sum of positive squares in only one way, i.e., 16908544 + 1345600 = 4112^2 + 1160^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142547 + ... + 142674.

It is an arithmetic number, because the mean of its divisors is an integer number (2587371).

Almost surely, 2^18254144 is an apocalyptic number.

It is an amenable number.

18254144 is a deficient number, since it is larger than the sum of its proper divisors (17969050).

18254144 is an equidigital number, since it uses as much as digits as its factorization.

18254144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285233 (or 285223 counting only the distinct ones).

The product of its digits is 5120, while the sum is 29.

The square root of 18254144 is about 4272.4868636428. The cubic root of 18254144 is about 263.3017975731.

The spelling of 18254144 in words is "eighteen million, two hundred fifty-four thousand, one hundred forty-four".