212124928 has 36 divisors (see below), whose sum is σ = 425315520. Its totient is φ = 105588224.

The previous prime is 212124919. The next prime is 212124953. The reversal of 212124928 is 829421212.

It is a self number, because there is not a number n which added to its sum of digits gives 212124928.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59451 + ... + 62917.

It is an arithmetic number, because the mean of its divisors is an integer number (11814320).

Almost surely, 2^212124928 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 212124928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212657760).

212124928 is an abundant number, since it is smaller than the sum of its proper divisors (213190592).

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

212124928 is an equidigital number, since it uses as much as digits as its factorization.

212124928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3722 (or 3708 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 212124928 is about 14564.5091918677. The cubic root of 212124928 is about 596.3902973317.

The spelling of 212124928 in words is "two hundred twelve million, one hundred twenty-four thousand, nine hundred twenty-eight".