212943678 has 16 divisors (see below), whose sum is σ = 448302720. Its totient is φ = 67245336.

The previous prime is 212943677. The next prime is 212943707. The reversal of 212943678 is 876349212.

212943678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212943671) 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, 933850 + ... + 934077.

It is an arithmetic number, because the mean of its divisors is an integer number (28018920).

Almost surely, 2^212943678 is an apocalyptic number.

212943678 is an abundant number, since it is smaller than the sum of its proper divisors (235359042).

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

212943678 is a wasteful number, since it uses less digits than its factorization.

212943678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867951.

The product of its digits is 145152, while the sum is 42.

The square root of 212943678 is about 14592.5898318290. The cubic root of 212943678 is about 597.1566188133.

The spelling of 212943678 in words is "two hundred twelve million, nine hundred forty-three thousand, six hundred seventy-eight".