256067746 has 16 divisors (see below), whose sum is σ = 422039520. Its totient is φ = 115555680.

The previous prime is 256067741. The next prime is 256067783. The reversal of 256067746 is 647760652.

It is not an unprimeable number, because it can be changed into a prime (256067741) 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, 38811 + ... + 44926.

It is an arithmetic number, because the mean of its divisors is an integer number (26377470).

Almost surely, 2^256067746 is an apocalyptic number.

256067746 is a deficient number, since it is larger than the sum of its proper divisors (165971774).

256067746 is a wasteful number, since it uses less digits than its factorization.

256067746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83889.

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 256067746 is about 16002.1169224575. The cubic root of 256067746 is about 635.0164263013.

The spelling of 256067746 in words is "two hundred fifty-six million, sixty-seven thousand, seven hundred forty-six".