7228712 has 16 divisors (see below), whose sum is σ = 13583700. Its totient is φ = 3606400.

The previous prime is 7228703. The next prime is 7228717. The reversal of 7228712 is 2178227.

It can be written as a sum of positive squares in 2 ways, for example, as 6280036 + 948676 = 2506^2 + 974^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7228717) 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 3 ways as a sum of consecutive naturals, for example, 4964 + ... + 6252.

Almost surely, 2^7228712 is an apocalyptic number.

It is an amenable number.

7228712 is a deficient number, since it is larger than the sum of its proper divisors (6354988).

7228712 is a wasteful number, since it uses less digits than its factorization.

7228712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 1992 counting only the distinct ones).

The product of its digits is 3136, while the sum is 29.

The square root of 7228712 is about 2688.6264151049. The cubic root of 7228712 is about 193.3542136254.

It can be divided in two parts, 722 and 8712, that multiplied together give a square (6290064 = 2508²).

The spelling of 7228712 in words is "seven million, two hundred twenty-eight thousand, seven hundred twelve".