16345218 has 16 divisors (see below), whose sum is σ = 32731776. Its totient is φ = 5441520.

The previous prime is 16345171. The next prime is 16345229. The reversal of 16345218 is 81254361.

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

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 7 ways as a sum of consecutive naturals, for example, 6280 + ... + 8492.

It is an arithmetic number, because the mean of its divisors is an integer number (2045736).

Almost surely, 2^16345218 is an apocalyptic number.

16345218 is an abundant number, since it is smaller than the sum of its proper divisors (16386558).

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

16345218 is a wasteful number, since it uses less digits than its factorization.

16345218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3449.

The product of its digits is 5760, while the sum is 30.

The square root of 16345218 is about 4042.9219631351. The cubic root of 16345218 is about 253.7836109393.

Adding to 16345218 its reverse (81254361), we get a palindrome (97599579).

The spelling of 16345218 in words is "sixteen million, three hundred forty-five thousand, two hundred eighteen".