212823552 has 80 divisors (see below), whose sum is σ = 571963392. Its totient is φ = 70318080.

The previous prime is 212823539. The next prime is 212823581. The reversal of 212823552 is 255328212.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 194527 + ... + 195617.

Almost surely, 2^212823552 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 212823552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285981696).

212823552 is an abundant number, since it is smaller than the sum of its proper divisors (359139840).

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

212823552 is a wasteful number, since it uses less digits than its factorization.

212823552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239 (or 1223 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 212823552 is about 14588.4732580212. The cubic root of 212823552 is about 597.0443081626.

The spelling of 212823552 in words is "two hundred twelve million, eight hundred twenty-three thousand, five hundred fifty-two".