212812630 has 32 divisors (see below), whose sum is σ = 408830976. Its totient is φ = 79478784.

The previous prime is 212812603. The next prime is 212812651. The reversal of 212812630 is 36218212.

It is a junction number, because it is equal to n+sod(n) for n = 212812595 and 212812604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16662 + ... + 26518.

It is an arithmetic number, because the mean of its divisors is an integer number (12775968).

Almost surely, 2^212812630 is an apocalyptic number.

212812630 is a deficient number, since it is larger than the sum of its proper divisors (196018346).

212812630 is a wasteful number, since it uses less digits than its factorization.

212812630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10008.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 212812630 is about 14588.0989165827. The cubic root of 212812630 is about 597.0340946478.

The spelling of 212812630 in words is "two hundred twelve million, eight hundred twelve thousand, six hundred thirty".