7748228 has 6 divisors (see below), whose sum is σ = 13559406. Its totient is φ = 3874112.

The previous prime is 7748227. The next prime is 7748239. The reversal of 7748228 is 8228477.

It can be written as a sum of positive squares in only one way, i.e., 7573504 + 174724 = 2752^2 + 418^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7748191 and 7748200.

It is not an unprimeable number, because it can be changed into a prime (7748227) 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, 968525 + ... + 968532.

It is an arithmetic number, because the mean of its divisors is an integer number (2259901).

Almost surely, 2^7748228 is an apocalyptic number.

It is an amenable number.

7748228 is a deficient number, since it is larger than the sum of its proper divisors (5811178).

7748228 is a wasteful number, since it uses less digits than its factorization.

7748228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937061 (or 1937059 counting only the distinct ones).

The product of its digits is 50176, while the sum is 38.

The square root of 7748228 is about 2783.5639026256. The cubic root of 7748228 is about 197.8794967883.

Subtracting 7748228 from its reverse (8228477), we obtain a square (480249 = 693²).

The spelling of 7748228 in words is "seven million, seven hundred forty-eight thousand, two hundred twenty-eight".