7228581 has 8 divisors (see below), whose sum is σ = 9774144. Its totient is φ = 4751040.

The previous prime is 7228577. The next prime is 7228591. The reversal of 7228581 is 1858227.

7228581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7228581 - 2² = 7228577 is a prime.

It is a super-2 number, since 2×7228581² = 104504766547122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7228591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16756 + ... + 17181.

It is an arithmetic number, because the mean of its divisors is an integer number (1221768).

Almost surely, 2^7228581 is an apocalyptic number.

7228581 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7228581 is a deficient number, since it is larger than the sum of its proper divisors (2545563).

7228581 is a wasteful number, since it uses less digits than its factorization.

7228581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34011.

The product of its digits is 8960, while the sum is 33.

The square root of 7228581 is about 2688.6020531124. The cubic root of 7228581 is about 193.3530456185.

The spelling of 7228581 in words is "seven million, two hundred twenty-eight thousand, five hundred eighty-one".