7228578 has 48 divisors (see below), whose sum is σ = 17565120. Its totient is φ = 1973664.

The previous prime is 7228577. The next prime is 7228591. The reversal of 7228578 is 8758227.

It is not an unprimeable number, because it can be changed into a prime (7228577) 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 23 ways as a sum of consecutive naturals, for example, 6228 + ... + 7296.

It is an arithmetic number, because the mean of its divisors is an integer number (365940).

Almost surely, 2^7228578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7228578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8782560).

7228578 is an abundant number, since it is smaller than the sum of its proper divisors (10336542).

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

7228578 is a wasteful number, since it uses less digits than its factorization.

7228578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111 (or 1104 counting only the distinct ones).

The product of its digits is 62720, while the sum is 39.

The square root of 7228578 is about 2688.6014952015. The cubic root of 7228578 is about 193.3530188701.

The spelling of 7228578 in words is "seven million, two hundred twenty-eight thousand, five hundred seventy-eight".