4022040 has 96 divisors (see below), whose sum is σ = 13310640. Its totient is φ = 971520.

The previous prime is 4022027. The next prime is 4022041. The reversal of 4022040 is 402204.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4022041) 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 23 ways as a sum of consecutive naturals, for example, 14382 + ... + 14658.

Almost surely, 2^4022040 is an apocalyptic number.

4022040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4022040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6655320).

4022040 is an abundant number, since it is smaller than the sum of its proper divisors (9288600).

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

4022040 is a wasteful number, since it uses less digits than its factorization.

4022040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 4022040 is about 2005.5024308138. The cubic root of 4022040 is about 159.0311240048.

Adding to 4022040 its reverse (402204), we get a palindrome (4424244).

It can be divided in two parts, 402 and 2040, that added together give a palindrome (2442).

The spelling of 4022040 in words is "four million, twenty-two thousand, forty".