256020306 has 32 divisors (see below), whose sum is σ = 548710848. Its totient is φ = 79349760.

The previous prime is 256020287. The next prime is 256020367. The reversal of 256020306 is 603020652.

256020306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6655 + ... + 23586.

It is an arithmetic number, because the mean of its divisors is an integer number (17147214).

Almost surely, 2^256020306 is an apocalyptic number.

256020306 is an abundant number, since it is smaller than the sum of its proper divisors (292690542).

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

256020306 is a wasteful number, since it uses less digits than its factorization.

256020306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30346.

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

The square root of 256020306 is about 16000.6345499171. The cubic root of 256020306 is about 634.9772087631.

Adding to 256020306 its reverse (603020652), we get a palindrome (859040958).

The spelling of 256020306 in words is "two hundred fifty-six million, twenty thousand, three hundred six".