212023344 has 120 divisors (see below), whose sum is σ = 604514880. Its totient is φ = 63987456.

The previous prime is 212023327. The next prime is 212023349. The reversal of 212023344 is 443320212.

It is a self number, because there is not a number n which added to its sum of digits gives 212023344.

It is not an unprimeable number, because it can be changed into a prime (212023349) 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 23 ways as a sum of consecutive naturals, for example, 478387 + ... + 478829.

It is an arithmetic number, because the mean of its divisors is an integer number (5037624).

Almost surely, 2^212023344 is an apocalyptic number.

212023344 is a gapful number since it is divisible by the number (24) 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 212023344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302257440).

212023344 is an abundant number, since it is smaller than the sum of its proper divisors (392491536).

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

212023344 is a wasteful number, since it uses less digits than its factorization.

212023344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 212023344 is about 14561.0213927458. The cubic root of 212023344 is about 596.2950808225.

Adding to 212023344 its reverse (443320212), we get a palindrome (655343556).

The spelling of 212023344 in words is "two hundred twelve million, twenty-three thousand, three hundred forty-four".