16427320 has 64 divisors (see below), whose sum is σ = 45501120. Its totient is φ = 5197824.

The previous prime is 16427317. The next prime is 16427329. The reversal of 16427320 is 2372461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16427329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1384 + ... + 5896.

It is an arithmetic number, because the mean of its divisors is an integer number (710955).

Almost surely, 2^16427320 is an apocalyptic number.

16427320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16427320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22750560).

16427320 is an abundant number, since it is smaller than the sum of its proper divisors (29073800).

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

16427320 is a wasteful number, since it uses less digits than its factorization.

16427320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544 (or 4540 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 16427320 is about 4053.0630392334. The cubic root of 16427320 is about 254.2078196675.

Adding to 16427320 its reverse (2372461), we get a palindrome (18799781).

The spelling of 16427320 in words is "sixteen million, four hundred twenty-seven thousand, three hundred twenty".