4020432 has 80 divisors (see below), whose sum is σ = 11874240. Its totient is φ = 1161216.

The previous prime is 4020431. The next prime is 4020433. The reversal of 4020432 is 2340204.

It is a happy number.

4020432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4020431) and next prime (4020433).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020431) by changing a digit.

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, 10419 + ... + 10797.

It is an arithmetic number, because the mean of its divisors is an integer number (148428).

Almost surely, 2^4020432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4020432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5937120).

4020432 is an abundant number, since it is smaller than the sum of its proper divisors (7853808).

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

4020432 is a wasteful number, since it uses less digits than its factorization.

4020432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 4020432 is about 2005.1014936905. The cubic root of 4020432 is about 159.0099277848.

Adding to 4020432 its reverse (2340204), we get a palindrome (6360636).

The spelling of 4020432 in words is "four million, twenty thousand, four hundred thirty-two".