7445228 has 48 divisors (see below), whose sum is σ = 15785280. Its totient is φ = 3005184.

The previous prime is 7445219. The next prime is 7445237. The reversal of 7445228 is 8225447.

7445228 is digitally balanced in base 5, 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 (7445219) and next prime (7445237).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7445194 and 7445203.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 42950 + ... + 43122.

It is an arithmetic number, because the mean of its divisors is an integer number (328860).

Almost surely, 2^7445228 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 7445228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7892640).

7445228 is an abundant number, since it is smaller than the sum of its proper divisors (8340052).

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

7445228 is a wasteful number, since it uses less digits than its factorization.

7445228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 264 counting only the distinct ones).

The product of its digits is 17920, while the sum is 32.

The square root of 7445228 is about 2728.5945099996. The cubic root of 7445228 is about 195.2657170895.

The spelling of 7445228 in words is "seven million, four hundred forty-five thousand, two hundred twenty-eight".