212734736 has 20 divisors (see below), whose sum is σ = 436419612. Its totient is φ = 100110336.

The previous prime is 212734733. The next prime is 212734747. The reversal of 212734736 is 637437212.

It can be written as a sum of positive squares in 2 ways, for example, as 66324736 + 146410000 = 8144^2 + 12100^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212734696 and 212734705.

It is not an unprimeable number, because it can be changed into a prime (212734733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390785 + ... + 391328.

Almost surely, 2^212734736 is an apocalyptic number.

It is an amenable number.

212734736 is an abundant number, since it is smaller than the sum of its proper divisors (223684876).

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

212734736 is a wasteful number, since it uses less digits than its factorization.

212734736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782138 (or 782132 counting only the distinct ones).

The product of its digits is 42336, while the sum is 35.

The square root of 212734736 is about 14585.4288932482. The cubic root of 212734736 is about 596.9612433186.

It can be divided in two parts, 2127 and 34736, that added together give a palindrome (36863).

The spelling of 212734736 in words is "two hundred twelve million, seven hundred thirty-four thousand, seven hundred thirty-six".