18672346 has 64 divisors (see below), whose sum is σ = 37428480. Its totient is φ = 6773760.

The previous prime is 18672331. The next prime is 18672349. The reversal of 18672346 is 64327681.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (18672349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165186 + ... + 165298.

It is an arithmetic number, because the mean of its divisors is an integer number (584820).

Almost surely, 2^18672346 is an apocalyptic number.

18672346 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

18672346 is a wasteful number, since it uses less digits than its factorization.

18672346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199.

The product of its digits is 48384, while the sum is 37.

The square root of 18672346 is about 4321.1510040729. The cubic root of 18672346 is about 265.2973806464.

The spelling of 18672346 in words is "eighteen million, six hundred seventy-two thousand, three hundred forty-six".