219804012 has 72 divisors (see below), whose sum is σ = 580245120. Its totient is φ = 70076160.

The previous prime is 219803959. The next prime is 219804017. The reversal of 219804012 is 210408912.

219804012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×219804012² = 96627607382592288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (219804017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98218 + ... + 100430.

It is an arithmetic number, because the mean of its divisors is an integer number (8058960).

Almost surely, 2^219804012 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 219804012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290122560).

219804012 is an abundant number, since it is smaller than the sum of its proper divisors (360441108).

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

219804012 is a wasteful number, since it uses less digits than its factorization.

219804012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343 (or 2338 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 219804012 is about 14825.7887479891. The cubic root of 219804012 is about 603.5017564112.

The spelling of 219804012 in words is "two hundred nineteen million, eight hundred four thousand, twelve".