16219140 has 144 divisors (see below), whose sum is σ = 54999168. Its totient is φ = 3497472.

The previous prime is 16219121. The next prime is 16219171. The reversal of 16219140 is 4191261.

It is a self number, because there is not a number n which added to its sum of digits gives 16219140.

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 47 ways as a sum of consecutive naturals, for example, 222144 + ... + 222216.

Almost surely, 2^16219140 is an apocalyptic number.

16219140 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 16219140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27499584).

16219140 is an abundant number, since it is smaller than the sum of its proper divisors (38780028).

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

16219140 is a wasteful number, since it uses less digits than its factorization.

16219140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 16219140 is about 4027.2993432324. The cubic root of 16219140 is about 253.1294103789.

The spelling of 16219140 in words is "sixteen million, two hundred nineteen thousand, one hundred forty".