256949006 has 16 divisors (see below), whose sum is σ = 390289200. Its totient is φ = 126862848.

The previous prime is 256949003. The next prime is 256949059. The reversal of 256949006 is 600949652.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256949003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51260 + ... + 56048.

It is an arithmetic number, because the mean of its divisors is an integer number (24393075).

Almost surely, 2^256949006 is an apocalyptic number.

256949006 is a deficient number, since it is larger than the sum of its proper divisors (133340194).

256949006 is a wasteful number, since it uses less digits than its factorization.

256949006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5123.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 256949006 is about 16029.6290038167. The cubic root of 256949006 is about 635.7440642485.

The spelling of 256949006 in words is "two hundred fifty-six million, nine hundred forty-nine thousand, six".