256212078 has 32 divisors (see below), whose sum is σ = 522288000. Its totient is φ = 83768160.

The previous prime is 256212041. The next prime is 256212079. The reversal of 256212078 is 870212652.

It is a super-4 number, since 4×256212078⁴ (a number of 35 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256212079) 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, 170173 + ... + 171671.

It is an arithmetic number, because the mean of its divisors is an integer number (16321500).

Almost surely, 2^256212078 is an apocalyptic number.

256212078 is an abundant number, since it is smaller than the sum of its proper divisors (266075922).

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

256212078 is a wasteful number, since it uses less digits than its factorization.

256212078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032.

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

The square root of 256212078 is about 16006.6260654768. The cubic root of 256212078 is about 635.1357124116.

The spelling of 256212078 in words is "two hundred fifty-six million, two hundred twelve thousand, seventy-eight".