4020286 has 16 divisors (see below), whose sum is σ = 6485760. Its totient is φ = 1863000.

The previous prime is 4020283. The next prime is 4020287. The reversal of 4020286 is 6820204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661 + ... + 2911.

It is an arithmetic number, because the mean of its divisors is an integer number (405360).

Almost surely, 2^4020286 is an apocalyptic number.

4020286 is a deficient number, since it is larger than the sum of its proper divisors (2465474).

4020286 is a wasteful number, since it uses less digits than its factorization.

4020286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 4020286 is about 2005.0650862254. The cubic root of 4020286 is about 159.0080029726.

The spelling of 4020286 in words is "four million, twenty thousand, two hundred eighty-six".