256065834 has 8 divisors (see below), whose sum is σ = 512131680. Its totient is φ = 85355276.

The previous prime is 256065833. The next prime is 256065839. The reversal of 256065834 is 438560652.

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

256065834 is an admirable number.

It is a super-2 number, since 2×256065834² = 131139422684231112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256065792 and 256065801.

It is not an unprimeable number, because it can be changed into a prime (256065833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21338814 + ... + 21338825.

It is an arithmetic number, because the mean of its divisors is an integer number (64016460).

Almost surely, 2^256065834 is an apocalyptic number.

256065834 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

256065834 is a wasteful number, since it uses less digits than its factorization.

256065834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42677644.

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 256065834 is about 16002.0571802503. The cubic root of 256065834 is about 635.0148457893.

The spelling of 256065834 in words is "two hundred fifty-six million, sixty-five thousand, eight hundred thirty-four".