256452319 has 8 divisors (see below), whose sum is σ = 261746640. Its totient is φ = 251174976.

The previous prime is 256452299. The next prime is 256452331. The reversal of 256452319 is 913254652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256452319 - 2¹⁹ = 255928031 is a prime.

It is a super-2 number, since 2×256452319² = 131535583840955522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256452379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28899 + ... + 36715.

It is an arithmetic number, because the mean of its divisors is an integer number (32718330).

Almost surely, 2^256452319 is an apocalyptic number.

256452319 is a deficient number, since it is larger than the sum of its proper divisors (5294321).

256452319 is an equidigital number, since it uses as much as digits as its factorization.

256452319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8489.

The product of its digits is 64800, while the sum is 37.

The square root of 256452319 is about 16014.1287305929. The cubic root of 256452319 is about 635.3341651586.

The spelling of 256452319 in words is "two hundred fifty-six million, four hundred fifty-two thousand, three hundred nineteen".