18424316 has 6 divisors (see below), whose sum is σ = 32242560. Its totient is φ = 9212156.

The previous prime is 18424313. The next prime is 18424321. The reversal of 18424316 is 61342481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18424313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2303036 + ... + 2303043.

It is an arithmetic number, because the mean of its divisors is an integer number (5373760).

Almost surely, 2^18424316 is an apocalyptic number.

It is an amenable number.

18424316 is a deficient number, since it is larger than the sum of its proper divisors (13818244).

18424316 is a wasteful number, since it uses less digits than its factorization.

18424316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4606083 (or 4606081 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 18424316 is about 4292.3555304751. The cubic root of 18424316 is about 264.1174676206.

Adding to 18424316 its reverse (61342481), we get a palindrome (79766797).

The spelling of 18424316 in words is "eighteen million, four hundred twenty-four thousand, three hundred sixteen".