7292228 has 6 divisors (see below), whose sum is σ = 12761406. Its totient is φ = 3646112.

The previous prime is 7292227. The next prime is 7292237. The reversal of 7292228 is 8222927.

It can be written as a sum of positive squares in only one way, i.e., 5607424 + 1684804 = 2368^2 + 1298^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7292194 and 7292203.

It is not an unprimeable number, because it can be changed into a prime (7292221) 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 as a sum of consecutive naturals, namely, 911525 + ... + 911532.

It is an arithmetic number, because the mean of its divisors is an integer number (2126901).

Almost surely, 2^7292228 is an apocalyptic number.

It is an amenable number.

7292228 is a deficient number, since it is larger than the sum of its proper divisors (5469178).

7292228 is a wasteful number, since it uses less digits than its factorization.

7292228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823061 (or 1823059 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 7292228 is about 2700.4125610728. The cubic root of 7292228 is about 193.9188735085.

It can be divided in two parts, 7292 and 228, that multiplied together give a triangular number (1662576 = T₁₈₂₃).

The spelling of 7292228 in words is "seven million, two hundred ninety-two thousand, two hundred twenty-eight".