7775228 has 12 divisors (see below), whose sum is σ = 13679232. Its totient is φ = 3866880.

The previous prime is 7775221. The next prime is 7775231. The reversal of 7775228 is 8225777.

It is a junction number, because it is equal to n+sod(n) for n = 7775191 and 7775200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7775221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4325 + ... + 5852.

It is an arithmetic number, because the mean of its divisors is an integer number (1139936).

Almost surely, 2^7775228 is an apocalyptic number.

It is an amenable number.

7775228 is a deficient number, since it is larger than the sum of its proper divisors (5904004).

7775228 is a wasteful number, since it uses less digits than its factorization.

7775228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10372 (or 10370 counting only the distinct ones).

The product of its digits is 54880, while the sum is 38.

The square root of 7775228 is about 2788.4095825398. The cubic root of 7775228 is about 198.1090784208.

The spelling of 7775228 in words is "seven million, seven hundred seventy-five thousand, two hundred twenty-eight".