212787132 has 48 divisors (see below), whose sum is σ = 505827840. Its totient is φ = 69608448.

The previous prime is 212787119. The next prime is 212787139. The reversal of 212787132 is 231787212.

It is a junction number, because it is equal to n+sod(n) for n = 212787093 and 212787102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212787139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182383 + ... + 183545.

It is an arithmetic number, because the mean of its divisors is an integer number (10538080).

Almost surely, 2^212787132 is an apocalyptic number.

It is an amenable number.

212787132 is an abundant number, since it is smaller than the sum of its proper divisors (293040708).

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

212787132 is a wasteful number, since it uses less digits than its factorization.

212787132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442 (or 1440 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 212787132 is about 14587.2249588467. The cubic root of 212787132 is about 597.0102492846.

The spelling of 212787132 in words is "two hundred twelve million, seven hundred eighty-seven thousand, one hundred thirty-two".