256084237 has 4 divisors (see below), whose sum is σ = 262330236. Its totient is φ = 249838240.

The previous prime is 256084229. The next prime is 256084259. The reversal of 256084237 is 732480652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 139854276 + 116229961 = 11826^2 + 10781^2 .

It is a cyclic number.

It is not a de Polignac number, because 256084237 - 2³ = 256084229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256084196 and 256084205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256084217) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 3122938 + ... + 3123019.

It is an arithmetic number, because the mean of its divisors is an integer number (65582559).

Almost surely, 2^256084237 is an apocalyptic number.

It is an amenable number.

256084237 is a deficient number, since it is larger than the sum of its proper divisors (6245999).

256084237 is an equidigital number, since it uses as much as digits as its factorization.

256084237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6245998.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 256084237 is about 16002.6321897368. The cubic root of 256084237 is about 635.0300578906.

The spelling of 256084237 in words is "two hundred fifty-six million, eighty-four thousand, two hundred thirty-seven".