7442220 has 48 divisors (see below), whose sum is σ = 21143808. Its totient is φ = 1955520.

The previous prime is 7442213. The next prime is 7442231. The reversal of 7442220 is 222447.

7442220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3387 + ... + 5133.

It is an arithmetic number, because the mean of its divisors is an integer number (440496).

Almost surely, 2^7442220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7442220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10571904).

7442220 is an abundant number, since it is smaller than the sum of its proper divisors (13701588).

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

7442220 is a wasteful number, since it uses less digits than its factorization.

7442220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 7442220 is about 2728.0432547890. The cubic root of 7442220 is about 195.2394166459.

Adding to 7442220 its reverse (222447), we get a palindrome (7664667).

The spelling of 7442220 in words is "seven million, four hundred forty-two thousand, two hundred twenty".