4022840 has 32 divisors (see below), whose sum is σ = 9121680. Its totient is φ = 1596672.

The previous prime is 4022831. The next prime is 4022849. The reversal of 4022840 is 482204.

4022840 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 (4022831) and next prime (4022849).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4022849) 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 7 ways as a sum of consecutive naturals, for example, 6212 + ... + 6828.

Almost surely, 2^4022840 is an apocalyptic number.

4022840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4022840 is an abundant number, since it is smaller than the sum of its proper divisors (5098840).

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

4022840 is a wasteful number, since it uses less digits than its factorization.

4022840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 4022840 is about 2005.7018721635. The cubic root of 4022840 is about 159.0416672834.

The spelling of 4022840 in words is "four million, twenty-two thousand, eight hundred forty".