16427418 has 32 divisors (see below), whose sum is σ = 38031360. Its totient is φ = 4633200.

The previous prime is 16427417. The next prime is 16427449. The reversal of 16427418 is 81472461.

It is not an unprimeable number, because it can be changed into a prime (16427413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 843 + ... + 5793.

It is an arithmetic number, because the mean of its divisors is an integer number (1188480).

Almost surely, 2^16427418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16427418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19015680).

16427418 is an abundant number, since it is smaller than the sum of its proper divisors (21603942).

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

16427418 is a wasteful number, since it uses less digits than its factorization.

16427418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042.

The product of its digits is 10752, while the sum is 33.

The square root of 16427418 is about 4053.0751288374. The cubic root of 16427418 is about 254.2083251733.

Adding to 16427418 its reverse (81472461), we get a palindrome (97899879).

The spelling of 16427418 in words is "sixteen million, four hundred twenty-seven thousand, four hundred eighteen".