428431532 has 48 divisors (see below), whose sum is σ = 833817600. Its totient is φ = 191782080.

The previous prime is 428431519. The next prime is 428431541. The reversal of 428431532 is 235134824.

It is a super-2 number, since 2×428431532² = 367107155223734048, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 99194 + ... + 103422.

It is an arithmetic number, because the mean of its divisors is an integer number (17371200).

Almost surely, 2^428431532 is an apocalyptic number.

It is an amenable number.

428431532 is a deficient number, since it is larger than the sum of its proper divisors (405386068).

428431532 is a wasteful number, since it uses less digits than its factorization.

428431532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4326 (or 4324 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 428431532 is about 20698.5876812888. The cubic root of 428431532 is about 753.8653963531.

The spelling of 428431532 in words is "four hundred twenty-eight million, four hundred thirty-one thousand, five hundred thirty-two".