16022218 has 8 divisors (see below), whose sum is σ = 24486948. Its totient is φ = 7859904.

The previous prime is 16022213. The next prime is 16022219. The reversal of 16022218 is 81222061.

It can be written as a sum of positive squares in 2 ways, for example, as 15311569 + 710649 = 3913^2 + 843^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×16022218² = 513422939279048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16022213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75471 + ... + 75682.

Almost surely, 2^16022218 is an apocalyptic number.

16022218 is a deficient number, since it is larger than the sum of its proper divisors (8464730).

16022218 is a wasteful number, since it uses less digits than its factorization.

16022218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151208.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 16022218 is about 4002.7762865291. The cubic root of 16022218 is about 252.1007932233.

Adding to 16022218 its reverse (81222061), we get a palindrome (97244279).

The spelling of 16022218 in words is "sixteen million, twenty-two thousand, two hundred eighteen".