256240335 has 24 divisors (see below), whose sum is σ = 443952144. Its totient is φ = 126147840.

The previous prime is 256240273. The next prime is 256240343. The reversal of 256240335 is 533042652.

It is not a de Polignac number, because 256240335 - 2¹⁰ = 256239311 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48006 + ... + 53075.

It is an arithmetic number, because the mean of its divisors is an integer number (18498006).

Almost surely, 2^256240335 is an apocalyptic number.

256240335 is a deficient number, since it is larger than the sum of its proper divisors (187711809).

256240335 is a wasteful number, since it uses less digits than its factorization.

256240335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101115 (or 101102 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 256240335 is about 16007.5087068538. The cubic root of 256240335 is about 635.1590607385.

Adding to 256240335 its reverse (533042652), we get a palindrome (789282987).

The spelling of 256240335 in words is "two hundred fifty-six million, two hundred forty thousand, three hundred thirty-five".