256211304 has 32 divisors (see below), whose sum is σ = 642824640. Its totient is φ = 85097600.

The previous prime is 256211281. The next prime is 256211309. The reversal of 256211304 is 403112652.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (256211309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12252 + ... + 25739.

It is an arithmetic number, because the mean of its divisors is an integer number (20088270).

Almost surely, 2^256211304 is an apocalyptic number.

256211304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

256211304 is an abundant number, since it is smaller than the sum of its proper divisors (386613336).

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

256211304 is a wasteful number, since it uses less digits than its factorization.

256211304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38281 (or 38277 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 256211304 is about 16006.6018879711. The cubic root of 256211304 is about 635.1350728431.

Adding to 256211304 its reverse (403112652), we get a palindrome (659323956).

The spelling of 256211304 in words is "two hundred fifty-six million, two hundred eleven thousand, three hundred four".