1028134815 has 8 divisors (see below), whose sum is σ = 1645015728. Its totient is φ = 548338560.

The previous prime is 1028134801. The next prime is 1028134817. The reversal of 1028134815 is 5184318201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1028134815 - 2¹⁰ = 1028133791 is a prime.

It is a super-2 number, since 2×1028134815² = 2114122395630168450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028134817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34271146 + ... + 34271175.

It is an arithmetic number, because the mean of its divisors is an integer number (205626966).

Almost surely, 2^1028134815 is an apocalyptic number.

1028134815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1028134815 is a deficient number, since it is larger than the sum of its proper divisors (616880913).

1028134815 is an equidigital number, since it uses as much as digits as its factorization.

1028134815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68542329.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 1028134815 is about 32064.5413970011. The cubic root of 1028134815 is about 1009.2916691519.

The spelling of 1028134815 in words is "one billion, twenty-eight million, one hundred thirty-four thousand, eight hundred fifteen".