256070026 has 4 divisors (see below), whose sum is σ = 384105042. Its totient is φ = 128035012.

The previous prime is 256069981. The next prime is 256070027. The reversal of 256070026 is 620070652.

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

It can be written as a sum of positive squares in only one way, i.e., 256032001 + 38025 = 16001^2 + 195^2 .

It is a junction number, because it is equal to n+sod(n) for n = 256069976 and 256070003.

It is not an unprimeable number, because it can be changed into a prime (256070027) 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 as a sum of consecutive naturals, namely, 64017505 + ... + 64017508.

Almost surely, 2^256070026 is an apocalyptic number.

256070026 is a deficient number, since it is larger than the sum of its proper divisors (128035016).

256070026 is a wasteful number, since it uses less digits than its factorization.

256070026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128035015.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 256070026 is about 16002.1881628732. The cubic root of 256070026 is about 635.0183110019.

The spelling of 256070026 in words is "two hundred fifty-six million, seventy thousand, twenty-six".