1028821411 has 4 divisors (see below), whose sum is σ = 1029542800. Its totient is φ = 1028100024.

The previous prime is 1028821379. The next prime is 1028821421. The reversal of 1028821411 is 1141288201.

1028821411 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1141288201 = 1873 ⋅609337.

It is a cyclic number.

It is not a de Polignac number, because 1028821411 - 2⁵ = 1028821379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1028821411.

It is not an unprimeable number, because it can be changed into a prime (1028821421) 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, 358551 + ... + 361408.

It is an arithmetic number, because the mean of its divisors is an integer number (257385700).

Almost surely, 2^1028821411 is an apocalyptic number.

1028821411 is a deficient number, since it is larger than the sum of its proper divisors (721389).

1028821411 is an equidigital number, since it uses as much as digits as its factorization.

1028821411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721388.

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 1028821411 is about 32075.2460785572. The cubic root of 1028821411 is about 1009.5162899610.

The spelling of 1028821411 in words is "one billion, twenty-eight million, eight hundred twenty-one thousand, four hundred eleven".