1028228356 has 9 divisors (see below), whose sum is σ = 1799511861. Its totient is φ = 514082112.

The previous prime is 1028228351. The next prime is 1028228389. The reversal of 1028228356 is 6538228201.

The square root of 1028228356 is 32066.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3204100 + 1025024256 = 1790^2 + 32016^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028228351) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 56116 + ... + 72148.

Almost surely, 2^1028228356 is an apocalyptic number.

1028228356 is the 32066-th square number.

It is an amenable number.

1028228356 is a deficient number, since it is larger than the sum of its proper divisors (771283505).

1028228356 is an frugal number, since it uses more digits than its factorization.

1028228356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32070 (or 16035 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The cubic root of 1028228356 is about 1009.3222770993.

The spelling of 1028228356 in words is "one billion, twenty-eight million, two hundred twenty-eight thousand, three hundred fifty-six".