4021304 has 16 divisors (see below), whose sum is σ = 8617200. Its totient is φ = 1723392.

The previous prime is 4021301. The next prime is 4021309. The reversal of 4021304 is 4031204.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35849 + ... + 35960.

It is an arithmetic number, because the mean of its divisors is an integer number (538575).

Almost surely, 2^4021304 is an apocalyptic number.

It is an amenable number.

4021304 is an abundant number, since it is smaller than the sum of its proper divisors (4595896).

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

4021304 is a wasteful number, since it uses less digits than its factorization.

4021304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71822 (or 71818 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 4021304 is about 2005.3189272532. The cubic root of 4021304 is about 159.0214229537.

Adding to 4021304 its reverse (4031204), we get a palindrome (8052508).

The spelling of 4021304 in words is "four million, twenty-one thousand, three hundred four".