7228730 has 16 divisors (see below), whose sum is σ = 13315104. Its totient is φ = 2824080.

The previous prime is 7228729. The next prime is 7228733. The reversal of 7228730 is 378227.

It is a junction number, because it is equal to n+sod(n) for n = 7228693 and 7228702.

It is not an unprimeable number, because it can be changed into a prime (7228733) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7976 + ... + 8835.

It is an arithmetic number, because the mean of its divisors is an integer number (832194).

Almost surely, 2^7228730 is an apocalyptic number.

7228730 is a deficient number, since it is larger than the sum of its proper divisors (6086374).

7228730 is a wasteful number, since it uses less digits than its factorization.

7228730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16861.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 7228730 is about 2688.6297625370. The cubic root of 7228730 is about 193.3543741138.

The spelling of 7228730 in words is "seven million, two hundred twenty-eight thousand, seven hundred thirty".