12019216 has 40 divisors (see below), whose sum is σ = 25962624. Its totient is φ = 5343360.

The previous prime is 12019201. The next prime is 12019219. The reversal of 12019216 is 61291021.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12019219) 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 7 ways as a sum of consecutive naturals, for example, 7546 + ... + 8998.

Almost surely, 2^12019216 is an apocalyptic number.

12019216 is a gapful number since it is divisible by the number (16) 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 12019216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12981312).

12019216 is an abundant number, since it is smaller than the sum of its proper divisors (13943408).

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

12019216 is a wasteful number, since it uses less digits than its factorization.

12019216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1513 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 12019216 is about 3466.8740963583. The cubic root of 12019216 is about 229.0649879434.

The spelling of 12019216 in words is "twelve million, nineteen thousand, two hundred sixteen".