4020784 has 20 divisors (see below), whose sum is σ = 7891360. Its totient is φ = 1984320.

The previous prime is 4020781. The next prime is 4020833. The reversal of 4020784 is 4870204.

4020784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020781) 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 3 ways as a sum of consecutive naturals, for example, 327 + ... + 2854.

It is an arithmetic number, because the mean of its divisors is an integer number (394568).

Almost surely, 2^4020784 is an apocalyptic number.

It is an amenable number.

4020784 is a deficient number, since it is larger than the sum of its proper divisors (3870576).

4020784 is a wasteful number, since it uses less digits than its factorization.

4020784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268 (or 3262 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 4020784 is about 2005.1892678747. The cubic root of 4020784 is about 159.0145682365.

Adding to 4020784 its reverse (4870204), we get a palindrome (8890988).

The spelling of 4020784 in words is "four million, twenty thousand, seven hundred eighty-four".