4065428 has 6 divisors (see below), whose sum is σ = 7114506. Its totient is φ = 2032712.

The previous prime is 4065427. The next prime is 4065461. The reversal of 4065428 is 8245604.

It can be written as a sum of positive squares in only one way, i.e., 3139984 + 925444 = 1772^2 + 962^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4065428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4065427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 508175 + ... + 508182.

It is an arithmetic number, because the mean of its divisors is an integer number (1185751).

Almost surely, 2^4065428 is an apocalyptic number.

It is an amenable number.

4065428 is a deficient number, since it is larger than the sum of its proper divisors (3049078).

4065428 is a wasteful number, since it uses less digits than its factorization.

4065428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016361 (or 1016359 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 4065428 is about 2016.2906536509. The cubic root of 4065428 is about 159.6009325683.

The spelling of 4065428 in words is "four million, sixty-five thousand, four hundred twenty-eight".