1028838511 has 4 divisors (see below), whose sum is σ = 1052765032. Its totient is φ = 1004911992.

The previous prime is 1028838497. The next prime is 1028838527. The reversal of 1028838511 is 1158388201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1158388201 = 1117 ⋅1037053.

It is a cyclic number.

It is not a de Polignac number, because 1028838511 - 2²⁹ = 491967599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028838211) 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, 11963196 + ... + 11963281.

It is an arithmetic number, because the mean of its divisors is an integer number (263191258).

Almost surely, 2^1028838511 is an apocalyptic number.

1028838511 is a deficient number, since it is larger than the sum of its proper divisors (23926521).

1028838511 is an equidigital number, since it uses as much as digits as its factorization.

1028838511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23926520.

The product of its (nonzero) digits is 15360, while the sum is 37.

The square root of 1028838511 is about 32075.5126381481. The cubic root of 1028838511 is about 1009.5218829735.

The spelling of 1028838511 in words is "one billion, twenty-eight million, eight hundred thirty-eight thousand, five hundred eleven".