16127220 has 96 divisors (see below), whose sum is σ = 48601728. Its totient is φ = 3981312.

The previous prime is 16127213. The next prime is 16127239. The reversal of 16127220 is 2272161.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 98859 + ... + 99021.

It is an arithmetic number, because the mean of its divisors is an integer number (506268).

Almost surely, 2^16127220 is an apocalyptic number.

16127220 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 16127220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24300864).

16127220 is an abundant number, since it is smaller than the sum of its proper divisors (32474508).

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

16127220 is a wasteful number, since it uses less digits than its factorization.

16127220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 16127220 is about 4015.8710138649. The cubic root of 16127220 is about 252.6503107912.

Adding to 16127220 its reverse (2272161), we get a palindrome (18399381).

The spelling of 16127220 in words is "sixteen million, one hundred twenty-seven thousand, two hundred twenty".