18114216 has 32 divisors (see below), whose sum is σ = 45390240. Its totient is φ = 6024128.

The previous prime is 18114209. The next prime is 18114227. The reversal of 18114216 is 61241181.

18114216 is nontrivially palindromic in base 11.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18655 + ... + 19601.

It is an arithmetic number, because the mean of its divisors is an integer number (1418445).

Almost surely, 2^18114216 is an apocalyptic number.

It is an amenable number.

18114216 is an abundant number, since it is smaller than the sum of its proper divisors (27276024).

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

18114216 is a wasteful number, since it uses less digits than its factorization.

18114216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753 (or 1749 counting only the distinct ones).

The product of its digits is 384, while the sum is 24.

The square root of 18114216 is about 4256.0798864683. The cubic root of 18114216 is about 262.6272870210.

Adding to 18114216 its reverse (61241181), we get a palindrome (79355397).

The spelling of 18114216 in words is "eighteen million, one hundred fourteen thousand, two hundred sixteen".