7777228 has 12 divisors (see below), whose sum is σ = 14410872. Its totient is φ = 3659840.

The previous prime is 7777223. The next prime is 7777229. The reversal of 7777228 is 8227777.

It is a super-3 number, since 3×7777228³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (7777223) 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, 57118 + ... + 57253.

It is an arithmetic number, because the mean of its divisors is an integer number (1200906).

Almost surely, 2^7777228 is an apocalyptic number.

It is an amenable number.

7777228 is a deficient number, since it is larger than the sum of its proper divisors (6633644).

7777228 is a wasteful number, since it uses less digits than its factorization.

7777228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114392 (or 114390 counting only the distinct ones).

The product of its digits is 76832, while the sum is 40.

The square root of 7777228 is about 2788.7681868524. The cubic root of 7777228 is about 198.1260633113.

The spelling of 7777228 in words is "seven million, seven hundred seventy-seven thousand, two hundred twenty-eight".