212079924 has 192 divisors, whose sum is σ = 658022400. Its totient is φ = 57822336.

The previous prime is 212079863. The next prime is 212079937. The reversal of 212079924 is 429970212.

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

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 63 ways as a sum of consecutive naturals, for example, 2684517 + ... + 2684595.

It is an arithmetic number, because the mean of its divisors is an integer number (3427200).

Almost surely, 2^212079924 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212079924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329011200).

212079924 is an abundant number, since it is smaller than the sum of its proper divisors (445942476).

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

212079924 is a wasteful number, since it uses less digits than its factorization.

212079924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 212079924 is about 14562.9641213594. The cubic root of 212079924 is about 596.3481180249.

The spelling of 212079924 in words is "two hundred twelve million, seventy-nine thousand, nine hundred twenty-four".