431928642 has 32 divisors (see below), whose sum is σ = 904310784. Its totient is φ = 137365200.

The previous prime is 431928631. The next prime is 431928671. The reversal of 431928642 is 246829134.

It is a self number, because there is not a number n which added to its sum of digits gives 431928642.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3148 + ... + 29559.

It is an arithmetic number, because the mean of its divisors is an integer number (28259712).

Almost surely, 2^431928642 is an apocalyptic number.

431928642 is an abundant number, since it is smaller than the sum of its proper divisors (472382142).

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

431928642 is a wasteful number, since it uses less digits than its factorization.

431928642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32814.

The product of its digits is 82944, while the sum is 39.

The square root of 431928642 is about 20782.8930132453. The cubic root of 431928642 is about 755.9110047532.

The spelling of 431928642 in words is "four hundred thirty-one million, nine hundred twenty-eight thousand, six hundred forty-two".