256023306 has 48 divisors (see below), whose sum is σ = 691599168. Its totient is φ = 66499200.

The previous prime is 256023301. The next prime is 256023307. The reversal of 256023306 is 603320652.

256023306 is a `hidden beast` number, since 25 + 602 + 3 + 30 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 256023306.

It is not an unprimeable number, because it can be changed into a prime (256023301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90975 + ... + 93746.

It is an arithmetic number, because the mean of its divisors is an integer number (14408316).

Almost surely, 2^256023306 is an apocalyptic number.

256023306 is an abundant number, since it is smaller than the sum of its proper divisors (435575862).

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

256023306 is a wasteful number, since it uses less digits than its factorization.

256023306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184747 (or 184744 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 256023306 is about 16000.7282959245. The cubic root of 256023306 is about 634.9796889364.

Adding to 256023306 its reverse (603320652), we get a palindrome (859343958).

The spelling of 256023306 in words is "two hundred fifty-six million, twenty-three thousand, three hundred six".