212843928 has 64 divisors (see below), whose sum is σ = 611049600. Its totient is φ = 61102080.

The previous prime is 212843921. The next prime is 212843941. The reversal of 212843928 is 829348212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212843921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16201 + ... + 26232.

It is an arithmetic number, because the mean of its divisors is an integer number (9547650).

Almost surely, 2^212843928 is an apocalyptic number.

It is an amenable number.

212843928 is an abundant number, since it is smaller than the sum of its proper divisors (398205672).

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

212843928 is a wasteful number, since it uses less digits than its factorization.

212843928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42472 (or 42468 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 212843928 is about 14589.1716008826. The cubic root of 212843928 is about 597.0633614840.

It can be divided in two parts, 2128 and 43928, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 212843928 in words is "two hundred twelve million, eight hundred forty-three thousand, nine hundred twenty-eight".