423730256 has 20 divisors (see below), whose sum is σ = 840071232. Its totient is φ = 206937696.

The previous prime is 423730247. The next prime is 423730259. The reversal of 423730256 is 652037324.

423730256 = 1748² + 1749² + ... + 1876².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423730259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307256 + ... + 308631.

Almost surely, 2^423730256 is an apocalyptic number.

It is an amenable number.

423730256 is a deficient number, since it is larger than the sum of its proper divisors (416340976).

423730256 is a wasteful number, since it uses less digits than its factorization.

423730256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615938 (or 615932 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 423730256 is about 20584.7092765480. The cubic root of 423730256 is about 751.0978032829.

The spelling of 423730256 in words is "four hundred twenty-three million, seven hundred thirty thousand, two hundred fifty-six".