256213230 has 64 divisors (see below), whose sum is σ = 756822528. Its totient is φ = 54057600.

The previous prime is 256213219. The next prime is 256213247. The reversal of 256213230 is 32312652.

256213230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 256213230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44196 + ... + 49655.

It is an arithmetic number, because the mean of its divisors is an integer number (11825352).

Almost surely, 2^256213230 is an apocalyptic number.

256213230 is an abundant number, since it is smaller than the sum of its proper divisors (500609298).

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

256213230 is a wasteful number, since it uses less digits than its factorization.

256213230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93881.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 256213230 is about 16006.6620505338. The cubic root of 256213230 is about 635.1366643251.

Adding to 256213230 its reverse (32312652), we get a palindrome (288525882).

The spelling of 256213230 in words is "two hundred fifty-six million, two hundred thirteen thousand, two hundred thirty".