432221424 has 40 divisors (see below), whose sum is σ = 1175341440. Its totient is φ = 136490688.

The previous prime is 432221411. The next prime is 432221429. The reversal of 432221424 is 424122234.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 432221394 and 432221403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432221429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236052 + ... + 237875.

It is an arithmetic number, because the mean of its divisors is an integer number (29383536).

Almost surely, 2^432221424 is an apocalyptic number.

It is an amenable number.

432221424 is an abundant number, since it is smaller than the sum of its proper divisors (743120016).

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

432221424 is a wasteful number, since it uses less digits than its factorization.

432221424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473957 (or 473951 counting only the distinct ones).

The product of its digits is 3072, while the sum is 24.

The square root of 432221424 is about 20789.9356420360. The cubic root of 432221424 is about 756.0817637834.

Adding to 432221424 its reverse (424122234), we get a palindrome (856343658).

The spelling of 432221424 in words is "four hundred thirty-two million, two hundred twenty-one thousand, four hundred twenty-four".