212256078 has 8 divisors (see below), whose sum is σ = 424512168. Its totient is φ = 70752024.

The previous prime is 212256071. The next prime is 212256119. The reversal of 212256078 is 870652212.

212256078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

212256078 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212256071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17688001 + ... + 17688012.

It is an arithmetic number, because the mean of its divisors is an integer number (53064021).

Almost surely, 2^212256078 is an apocalyptic number.

212256078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

212256078 is a wasteful number, since it uses less digits than its factorization.

212256078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35376018.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 212256078 is about 14569.0108792601. The cubic root of 212256078 is about 596.5131816373.

The spelling of 212256078 in words is "two hundred twelve million, two hundred fifty-six thousand, seventy-eight".