4221432 has 24 divisors (see below), whose sum is σ = 11433240. Its totient is φ = 1407120.

The previous prime is 4221421. The next prime is 4221433. The reversal of 4221432 is 2341224.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221433) 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, 29244 + ... + 29387.

It is an arithmetic number, because the mean of its divisors is an integer number (476385).

Almost surely, 2^4221432 is an apocalyptic number.

It is an amenable number.

4221432 is an abundant number, since it is smaller than the sum of its proper divisors (7211808).

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

4221432 is a wasteful number, since it uses less digits than its factorization.

4221432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58643 (or 58636 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 4221432 is about 2054.6123722007. The cubic root of 4221432 is about 161.6168356475.

Adding to 4221432 its reverse (2341224), we get a palindrome (6562656).

The spelling of 4221432 in words is "four million, two hundred twenty-one thousand, four hundred thirty-two".