18672316 has 24 divisors (see below), whose sum is σ = 35315280. Its totient is φ = 8587392.

The previous prime is 18672281. The next prime is 18672319. The reversal of 18672316 is 61327681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18672319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21360 + ... + 22216.

It is an arithmetic number, because the mean of its divisors is an integer number (1471470).

Almost surely, 2^18672316 is an apocalyptic number.

It is an amenable number.

18672316 is a deficient number, since it is larger than the sum of its proper divisors (16642964).

18672316 is a wasteful number, since it uses less digits than its factorization.

18672316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293 (or 1291 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 18672316 is about 4321.1475327741. The cubic root of 18672316 is about 265.2972385659.

Adding to 18672316 its reverse (61327681), we get a palindrome (79999997).

The spelling of 18672316 in words is "eighteen million, six hundred seventy-two thousand, three hundred sixteen".