4231726640 has 40 divisors (see below), whose sum is σ = 9963320640. Its totient is φ = 1671261696.

The previous prime is 4231726613. The next prime is 4231726651. The reversal of 4231726640 is 466271324.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 4231726640.

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, 328469 + ... + 341108.

It is an arithmetic number, because the mean of its divisors is an integer number (249083016).

Almost surely, 2^4231726640 is an apocalyptic number.

4231726640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4231726640 is an abundant number, since it is smaller than the sum of its proper divisors (5731594000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4231726640 is a wasteful number, since it uses less digits than its factorization.

4231726640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669669 (or 669663 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 4231726640 is about 65051.7228057797. The cubic root of 4231726640 is about 1617.4810520249.

Adding to 4231726640 its reverse (466271324), we get a palindrome (4697997964).

The spelling of 4231726640 in words is "four billion, two hundred thirty-one million, seven hundred twenty-six thousand, six hundred forty".