432321540 has 48 divisors (see below), whose sum is σ = 1383430272. Its totient is φ = 98816256.

The previous prime is 432321521. The next prime is 432321551. The reversal of 432321540 is 45123234.

It is a self number, because there is not a number n which added to its sum of digits gives 432321540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 514249 + ... + 515088.

It is an arithmetic number, because the mean of its divisors is an integer number (28821464).

Almost surely, 2^432321540 is an apocalyptic number.

It is an amenable number.

432321540 is an abundant number, since it is smaller than the sum of its proper divisors (951108732).

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

432321540 is a wasteful number, since it uses less digits than its factorization.

432321540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029356 (or 1029354 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 432321540 is about 20792.3433022832. The cubic root of 432321540 is about 756.1401366712.

Adding to 432321540 its reverse (45123234), we get a palindrome (477444774).

The spelling of 432321540 in words is "four hundred thirty-two million, three hundred twenty-one thousand, five hundred forty".