19116216 has 128 divisors (see below), whose sum is σ = 62208000. Its totient is φ = 5325696.

The previous prime is 19116203. The next prime is 19116217. The reversal of 19116216 is 61261191.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 19116216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19116217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70930 + ... + 71198.

It is an arithmetic number, because the mean of its divisors is an integer number (486000).

Almost surely, 2^19116216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19116216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31104000).

19116216 is an abundant number, since it is smaller than the sum of its proper divisors (43091784).

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

19116216 is a wasteful number, since it uses less digits than its factorization.

19116216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 328 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 19116216 is about 4372.2095100761. The cubic root of 19116216 is about 267.3831136927.

The spelling of 19116216 in words is "nineteen million, one hundred sixteen thousand, two hundred sixteen".