7566228 has 18 divisors (see below), whose sum is σ = 19125834. Its totient is φ = 2522064.

The previous prime is 7566217. The next prime is 7566239. The reversal of 7566228 is 8226657.

It is an interprime number because it is at equal distance from previous prime (7566217) and next prime (7566239).

It can be written as a sum of positive squares in only one way, i.e., 7064964 + 501264 = 2658^2 + 708^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×7566228² = 114495612295968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 210173 = 7566228 / (7 + 5 + 6 + 6 + 2 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 7566192 and 7566201.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 105051 + ... + 105122.

Almost surely, 2^7566228 is an apocalyptic number.

It is an amenable number.

7566228 is an abundant number, since it is smaller than the sum of its proper divisors (11559606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7566228 is a wasteful number, since it uses less digits than its factorization.

7566228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210183 (or 210178 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 7566228 is about 2750.6777346683. The cubic root of 7566228 is about 196.3178585300.

The spelling of 7566228 in words is "seven million, five hundred sixty-six thousand, two hundred twenty-eight".