1028201120 has 24 divisors (see below), whose sum is σ = 2429125524. Its totient is φ = 411280384.

The previous prime is 1028201117. The next prime is 1028201147. The reversal of 1028201120 is 211028201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 826447504 + 201753616 = 28748^2 + 14204^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3212969 + ... + 3213288.

Almost surely, 2^1028201120 is an apocalyptic number.

1028201120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028201120 is an abundant number, since it is smaller than the sum of its proper divisors (1400924404).

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

1028201120 is an equidigital number, since it uses as much as digits as its factorization.

1028201120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6426272 (or 6426264 counting only the distinct ones).

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

The square root of 1028201120 is about 32065.5753106037. The cubic root of 1028201120 is about 1009.3133652838.

Adding to 1028201120 its reverse (211028201), we get a palindrome (1239229321).

The spelling of 1028201120 in words is "one billion, twenty-eight million, two hundred one thousand, one hundred twenty".