256020304 has 10 divisors (see below), whose sum is σ = 496039370. Its totient is φ = 128010144.

The previous prime is 256020287. The next prime is 256020367. The reversal of 256020304 is 403020652.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 249008400 + 7011904 = 15780^2 + 2648^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 8000619 + ... + 8000650.

It is an arithmetic number, because the mean of its divisors is an integer number (49603937).

Almost surely, 2^256020304 is an apocalyptic number.

It is an amenable number.

256020304 is a deficient number, since it is larger than the sum of its proper divisors (240019066).

256020304 is a wasteful number, since it uses less digits than its factorization.

256020304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16001277 (or 16001271 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 256020304 is about 16000.6344874196. The cubic root of 256020304 is about 634.9772071096.

Adding to 256020304 its reverse (403020652), we get a palindrome (659040956).

The spelling of 256020304 in words is "two hundred fifty-six million, twenty thousand, three hundred four".