212243632 has 20 divisors (see below), whose sum is σ = 429102000. Its totient is φ = 101507648.

The previous prime is 212243627. The next prime is 212243651. The reversal of 212243632 is 236342212.

It is a junction number, because it is equal to n+sod(n) for n = 212243597 and 212243606.

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, 288007 + ... + 288742.

It is an arithmetic number, because the mean of its divisors is an integer number (21455100).

Almost surely, 2^212243632 is an apocalyptic number.

It is an amenable number.

212243632 is an abundant number, since it is smaller than the sum of its proper divisors (216858368).

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

212243632 is a wasteful number, since it uses less digits than its factorization.

212243632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576780 (or 576774 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 212243632 is about 14568.5837335000. The cubic root of 212243632 is about 596.5015222175.

Adding to 212243632 its reverse (236342212), we get a palindrome (448585844).

It can be divided in two parts, 2122 and 43632, that added together give a palindrome (45754).

The spelling of 212243632 in words is "two hundred twelve million, two hundred forty-three thousand, six hundred thirty-two".