1028112200 has 24 divisors (see below), whose sum is σ = 2390361330. Its totient is φ = 411244800.

The previous prime is 1028112193. The next prime is 1028112203. The reversal of 1028112200 is 22118201.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 747147556 + 280964644 = 27334^2 + 16762^2 .

It is not an unprimeable number, because it can be changed into a prime (1028112203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2570081 + ... + 2570480.

Almost surely, 2^1028112200 is an apocalyptic number.

1028112200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028112200 is an abundant number, since it is smaller than the sum of its proper divisors (1362249130).

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

1028112200 is a wasteful number, since it uses less digits than its factorization.

1028112200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5140577 (or 5140568 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1028112200 is about 32064.1887469495. The cubic root of 1028112200 is about 1009.2842689232.

The spelling of 1028112200 in words is "one billion, twenty-eight million, one hundred twelve thousand, two hundred".