256212206 has 4 divisors (see below), whose sum is σ = 384318312. Its totient is φ = 128106102.

The previous prime is 256212137. The next prime is 256212223. The reversal of 256212206 is 602212652.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64053050 + ... + 64053053.

It is an arithmetic number, because the mean of its divisors is an integer number (96079578).

Almost surely, 2^256212206 is an apocalyptic number.

256212206 is a deficient number, since it is larger than the sum of its proper divisors (128106106).

256212206 is a wasteful number, since it uses less digits than its factorization.

256212206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128106105.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 256212206 is about 16006.6300638204. The cubic root of 256212206 is about 635.1358181799.

Adding to 256212206 its reverse (602212652), we get a palindrome (858424858).

The spelling of 256212206 in words is "two hundred fifty-six million, two hundred twelve thousand, two hundred six".