212643246 has 16 divisors (see below), whose sum is σ = 425629008. Its totient is φ = 70824000.

The previous prime is 212643227. The next prime is 212643247. The reversal of 212643246 is 642346212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212643247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5815 + ... + 21426.

It is an arithmetic number, because the mean of its divisors is an integer number (26601813).

Almost surely, 2^212643246 is an apocalyptic number.

212643246 is an abundant number, since it is smaller than the sum of its proper divisors (212985762).

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

212643246 is a wasteful number, since it uses less digits than its factorization.

212643246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28547.

The product of its digits is 13824, while the sum is 30.

The square root of 212643246 is about 14582.2922066457. The cubic root of 212643246 is about 596.8756534481.

Adding to 212643246 its reverse (642346212), we get a palindrome (854989458).

The spelling of 212643246 in words is "two hundred twelve million, six hundred forty-three thousand, two hundred forty-six".