7752228 has 72 divisors (see below), whose sum is σ = 21003360. Its totient is φ = 2217600.

The previous prime is 7752223. The next prime is 7752229. The reversal of 7752228 is 8222577.

It is a super-4 number, since 4×7752228⁴ (a number of 29 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (7752223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27448 + ... + 27728.

Almost surely, 2^7752228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7752228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10501680).

7752228 is an abundant number, since it is smaller than the sum of its proper divisors (13251132).

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

7752228 is a wasteful number, since it uses less digits than its factorization.

7752228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 316 counting only the distinct ones).

The product of its digits is 15680, while the sum is 33.

The square root of 7752228 is about 2784.2823132721. The cubic root of 7752228 is about 197.9135425004.

It can be divided in two parts, 775 and 2228, that added together give a palindrome (3003).

The spelling of 7752228 in words is "seven million, seven hundred fifty-two thousand, two hundred twenty-eight".