431389872 has 30 divisors (see below), whose sum is σ = 1207292892. Its totient is φ = 143796576.

The previous prime is 431389811. The next prime is 431389879. The reversal of 431389872 is 278983134.

It is not an unprimeable number, because it can be changed into a prime (431389879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1497738 + ... + 1498025.

Almost surely, 2^431389872 is an apocalyptic number.

It is an amenable number.

431389872 is an abundant number, since it is smaller than the sum of its proper divisors (775903020).

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

431389872 is a wasteful number, since it uses less digits than its factorization.

431389872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995777 (or 2995768 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 431389872 is about 20769.9271062756. The cubic root of 431389872 is about 755.5965765630.

The spelling of 431389872 in words is "four hundred thirty-one million, three hundred eighty-nine thousand, eight hundred seventy-two".