212444304 has 20 divisors (see below), whose sum is σ = 548814576. Its totient is φ = 70814752.

The previous prime is 212444303. The next prime is 212444321. The reversal of 212444304 is 403444212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (212444303) 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 3 ways as a sum of consecutive naturals, for example, 2212914 + ... + 2213009.

Almost surely, 2^212444304 is an apocalyptic number.

212444304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

212444304 is an abundant number, since it is smaller than the sum of its proper divisors (336370272).

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

212444304 is a wasteful number, since it uses less digits than its factorization.

212444304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4425934 (or 4425928 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 212444304 is about 14575.4692548816. The cubic root of 212444304 is about 596.6894563181.

Adding to 212444304 its reverse (403444212), we get a palindrome (615888516).

The spelling of 212444304 in words is "two hundred twelve million, four hundred forty-four thousand, three hundred four".