212684424 has 16 divisors (see below), whose sum is σ = 531711120. Its totient is φ = 70894800.

The previous prime is 212684411. The next prime is 212684453. The reversal of 212684424 is 424486212.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4430902 + ... + 4430949.

It is an arithmetic number, because the mean of its divisors is an integer number (33231945).

Almost surely, 2^212684424 is an apocalyptic number.

212684424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

212684424 is an abundant number, since it is smaller than the sum of its proper divisors (319026696).

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

212684424 is a wasteful number, since it uses less digits than its factorization.

212684424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8861860 (or 8861856 counting only the distinct ones).

The product of its digits is 24576, while the sum is 33.

The square root of 212684424 is about 14583.7040562403. The cubic root of 212684424 is about 596.9141789437.

The spelling of 212684424 in words is "two hundred twelve million, six hundred eighty-four thousand, four hundred twenty-four".