18672234 has 64 divisors (see below), whose sum is σ = 44774400. Its totient is φ = 5186160.

The previous prime is 18672221. The next prime is 18672253. The reversal of 18672234 is 43227681.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18672195 and 18672204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88389 + ... + 88599.

It is an arithmetic number, because the mean of its divisors is an integer number (699600).

Almost surely, 2^18672234 is an apocalyptic number.

18672234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18672234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22387200).

18672234 is an abundant number, since it is smaller than the sum of its proper divisors (26102166).

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

18672234 is a wasteful number, since it uses less digits than its factorization.

18672234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 266 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 18672234 is about 4321.1380445434. The cubic root of 18672234 is about 265.2968502120.

The spelling of 18672234 in words is "eighteen million, six hundred seventy-two thousand, two hundred thirty-four".