423643256 has 32 divisors (see below), whose sum is σ = 830269440. Its totient is φ = 202269408.

The previous prime is 423643243. The next prime is 423643271. The reversal of 423643256 is 652346324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132185 + ... + 135351.

It is an arithmetic number, because the mean of its divisors is an integer number (25945920).

Almost surely, 2^423643256 is an apocalyptic number.

423643256 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

423643256 is a deficient number, since it is larger than the sum of its proper divisors (406626184).

423643256 is a wasteful number, since it uses less digits than its factorization.

423643256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3923 (or 3919 counting only the distinct ones).

The product of its digits is 103680, while the sum is 35.

The square root of 423643256 is about 20582.5959490051. The cubic root of 423643256 is about 751.0463948057.

The spelling of 423643256 in words is "four hundred twenty-three million, six hundred forty-three thousand, two hundred fifty-six".