18672912 has 120 divisors (see below), whose sum is σ = 55710720. Its totient is φ = 5829120.

The previous prime is 18672859. The next prime is 18672923. The reversal of 18672912 is 21927681.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209764 + ... + 209852.

It is an arithmetic number, because the mean of its divisors is an integer number (464256).

Almost surely, 2^18672912 is an apocalyptic number.

18672912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18672912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27855360).

18672912 is an abundant number, since it is smaller than the sum of its proper divisors (37037808).

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

18672912 is a wasteful number, since it uses less digits than its factorization.

18672912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 172 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 18672912 is about 4321.2164953865. The cubic root of 18672912 is about 265.3000612023.

The spelling of 18672912 in words is "eighteen million, six hundred seventy-two thousand, nine hundred twelve".