212520924 has 72 divisors (see below), whose sum is σ = 669771648. Its totient is φ = 55199520.

The previous prime is 212520883. The next prime is 212520949. The reversal of 212520924 is 429025212.

It is a happy number.

212520924 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35562 + ... + 41105.

It is an arithmetic number, because the mean of its divisors is an integer number (9302384).

Almost surely, 2^212520924 is an apocalyptic number.

It is an amenable number.

212520924 is an abundant number, since it is smaller than the sum of its proper divisors (457250724).

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

212520924 is a wasteful number, since it uses less digits than its factorization.

212520924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76695 (or 76690 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 212520924 is about 14578.0974067263. The cubic root of 212520924 is about 596.7611815501.

It can be divided in two parts, 212520 and 924, that added together give a square (213444 = 462²).

The spelling of 212520924 in words is "two hundred twelve million, five hundred twenty thousand, nine hundred twenty-four".