431540872 has 16 divisors (see below), whose sum is σ = 924730560. Its totient is φ = 184946064.

The previous prime is 431540849. The next prime is 431540917. The reversal of 431540872 is 278045134.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3852988 + ... + 3853099.

It is an arithmetic number, because the mean of its divisors is an integer number (57795660).

Almost surely, 2^431540872 is an apocalyptic number.

It is an amenable number.

431540872 is an abundant number, since it is smaller than the sum of its proper divisors (493189688).

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

431540872 is a wasteful number, since it uses less digits than its factorization.

431540872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7706100 (or 7706096 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 431540872 is about 20773.5618515458. The cubic root of 431540872 is about 755.6847271207.

The spelling of 431540872 in words is "four hundred thirty-one million, five hundred forty thousand, eight hundred seventy-two".