212304020 has 48 divisors (see below), whose sum is σ = 453212928. Its totient is φ = 83529600.

The previous prime is 212304019. The next prime is 212304031. The reversal of 212304020 is 20403212.

It is a junction number, because it is equal to n+sod(n) for n = 212303986 and 212304004.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 458309 + ... + 458771.

It is an arithmetic number, because the mean of its divisors is an integer number (9441936).

Almost surely, 2^212304020 is an apocalyptic number.

212304020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212304020 is an abundant number, since it is smaller than the sum of its proper divisors (240908908).

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

212304020 is a wasteful number, since it uses less digits than its factorization.

212304020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 212304020 is about 14570.6561279855. The cubic root of 212304020 is about 596.5580894712.

Adding to 212304020 its reverse (20403212), we get a palindrome (232707232).

The spelling of 212304020 in words is "two hundred twelve million, three hundred four thousand, twenty".