219838212 has 144 divisors (see below), whose sum is σ = 651268800. Its totient is φ = 64229760.

The previous prime is 219838211. The next prime is 219838253. The reversal of 219838212 is 212838912.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (13824) is a multiple of the sum of its prime factors (768).

It is not an unprimeable number, because it can be changed into a prime (219838211) by changing a digit.

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, 309714 + ... + 310422.

It is an arithmetic number, because the mean of its divisors is an integer number (4522700).

Almost surely, 2^219838212 is an apocalyptic number.

219838212 is a gapful number since it is divisible by the number (22) 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 219838212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325634400).

219838212 is an abundant number, since it is smaller than the sum of its proper divisors (431430588).

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

219838212 is a wasteful number, since it uses less digits than its factorization.

219838212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768 (or 754 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 219838212 is about 14826.9420987606. The cubic root of 219838212 is about 603.5330550357.

The spelling of 219838212 in words is "two hundred nineteen million, eight hundred thirty-eight thousand, two hundred twelve".