18128214 has 24 divisors (see below), whose sum is σ = 42299712. Its totient is φ = 5577840.

The previous prime is 18128213. The next prime is 18128237. The reversal of 18128214 is 41282181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18128213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38502 + ... + 38969.

It is an arithmetic number, because the mean of its divisors is an integer number (1762488).

Almost surely, 2^18128214 is an apocalyptic number.

18128214 is an abundant number, since it is smaller than the sum of its proper divisors (24171498).

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

18128214 is a wasteful number, since it uses less digits than its factorization.

18128214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77492 (or 77489 counting only the distinct ones).

The product of its digits is 1024, while the sum is 27.

The square root of 18128214 is about 4257.7240399068. The cubic root of 18128214 is about 262.6949191727.

The spelling of 18128214 in words is "eighteen million, one hundred twenty-eight thousand, two hundred fourteen".