18247316 has 12 divisors (see below), whose sum is σ = 32409888. Its totient is φ = 8987352.

The previous prime is 18247309. The next prime is 18247319. The reversal of 18247316 is 61374281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18247319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33776 + ... + 34311.

It is an arithmetic number, because the mean of its divisors is an integer number (2700824).

Almost surely, 2^18247316 is an apocalyptic number.

It is an amenable number.

18247316 is a deficient number, since it is larger than the sum of its proper divisors (14162572).

18247316 is a wasteful number, since it uses less digits than its factorization.

18247316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68158 (or 68156 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 18247316 is about 4271.6877226689. The cubic root of 18247316 is about 263.2689639531.

The spelling of 18247316 in words is "eighteen million, two hundred forty-seven thousand, three hundred sixteen".