431621456 has 20 divisors (see below), whose sum is σ = 955733472. Its totient is φ = 184980576.

The previous prime is 431621441. The next prime is 431621459. The reversal of 431621456 is 654126134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431621459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1926770 + ... + 1926993.

Almost surely, 2^431621456 is an apocalyptic number.

It is an amenable number.

431621456 is an abundant number, since it is smaller than the sum of its proper divisors (524112016).

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

431621456 is a wasteful number, since it uses less digits than its factorization.

431621456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3853778 (or 3853772 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 431621456 is about 20775.5013417246. The cubic root of 431621456 is about 755.7317619146.

The spelling of 431621456 in words is "four hundred thirty-one million, six hundred twenty-one thousand, four hundred fifty-six".