772228 has 6 divisors (see below), whose sum is σ = 1351406. Its totient is φ = 386112.

The previous prime is 772207. The next prime is 772229. The reversal of 772228 is 822277.

It can be written as a sum of positive squares in only one way, i.e., 636804 + 135424 = 798^2 + 368^2 .

It is a junction number, because it is equal to n+sod(n) for n = 772196 and 772205.

It is not an unprimeable number, because it can be changed into a prime (772229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96525 + ... + 96532.

2⁷⁷²²²⁸ is an apocalyptic number.

It is an amenable number.

772228 is a deficient number, since it is larger than the sum of its proper divisors (579178).

772228 is a wasteful number, since it uses less digits than its factorization.

772228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193061 (or 193059 counting only the distinct ones).

The product of its digits is 3136, while the sum is 28.

The square root of 772228 is about 878.7650425455. The cubic root of 772228 is about 91.7448823702.

It can be divided in two parts, 7722 and 28, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 772228 in words is "seven hundred seventy-two thousand, two hundred twenty-eight".