7228705 has 8 divisors (see below), whose sum is σ = 9463104. Its totient is φ = 5257200.

The previous prime is 7228703. The next prime is 7228717. The reversal of 7228705 is 5078227.

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

It is not a de Polignac number, because 7228705 - 2¹ = 7228703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7228703) 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 7 ways as a sum of consecutive naturals, for example, 65661 + ... + 65770.

It is an arithmetic number, because the mean of its divisors is an integer number (1182888).

Almost surely, 2^7228705 is an apocalyptic number.

It is an amenable number.

7228705 is a deficient number, since it is larger than the sum of its proper divisors (2234399).

7228705 is a wasteful number, since it uses less digits than its factorization.

7228705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131447.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 7228705 is about 2688.6251133247. The cubic root of 7228705 is about 193.3541512132.

The spelling of 7228705 in words is "seven million, two hundred twenty-eight thousand, seven hundred five".