431683928 has 64 divisors (see below), whose sum is σ = 905022720. Its totient is φ = 191692800.

The previous prime is 431683891. The next prime is 431683939. The reversal of 431683928 is 829386134.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 828308 + ... + 828828.

It is an arithmetic number, because the mean of its divisors is an integer number (14140980).

Almost surely, 2^431683928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431683928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452511360).

431683928 is an abundant number, since it is smaller than the sum of its proper divisors (473338792).

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

431683928 is a wasteful number, since it uses less digits than its factorization.

431683928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828 (or 824 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 431683928 is about 20777.0047889488. The cubic root of 431683928 is about 755.7682211749.

The spelling of 431683928 in words is "four hundred thirty-one million, six hundred eighty-three thousand, nine hundred twenty-eight".