18349672 has 16 divisors (see below), whose sum is σ = 37533600. Its totient is φ = 8340720.

The previous prime is 18349657. The next prime is 18349679. The reversal of 18349672 is 27694381.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (18349679) 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, 104172 + ... + 104347.

It is an arithmetic number, because the mean of its divisors is an integer number (2345850).

Almost surely, 2^18349672 is an apocalyptic number.

It is an amenable number.

18349672 is an abundant number, since it is smaller than the sum of its proper divisors (19183928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18349672 is a wasteful number, since it uses less digits than its factorization.

18349672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208536 (or 208532 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 18349672 is about 4283.6517131998. The cubic root of 18349672 is about 263.7603043225.

The spelling of 18349672 in words is "eighteen million, three hundred forty-nine thousand, six hundred seventy-two".