4022720 has 56 divisors (see below), whose sum is σ = 10326624. Its totient is φ = 1483776.

The previous prime is 4022719. The next prime is 4022741. The reversal of 4022720 is 272204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3677 + ... + 4643.

It is an arithmetic number, because the mean of its divisors is an integer number (184404).

Almost surely, 2^4022720 is an apocalyptic number.

4022720 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 4022720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5163312).

4022720 is an abundant number, since it is smaller than the sum of its proper divisors (6303904).

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

4022720 is a wasteful number, since it uses less digits than its factorization.

4022720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 987 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 4022720 is about 2005.6719572253. The cubic root of 4022720 is about 159.0400858808.

Adding to 4022720 its reverse (272204), we get a palindrome (4294924).

The spelling of 4022720 in words is "four million, twenty-two thousand, seven hundred twenty".