1028516971 has 4 divisors (see below), whose sum is σ = 1028587744. Its totient is φ = 1028446200.

The previous prime is 1028516963. The next prime is 1028516999. The reversal of 1028516971 is 1796158201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1028516971 - 2³ = 1028516963 is a prime.

It is the 32071-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028516941) by changing a digit.

It is a nontrivial repunit in base 32070.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4740 + ... + 45601.

It is an arithmetic number, because the mean of its divisors is an integer number (257146936).

Almost surely, 2^1028516971 is an apocalyptic number.

1028516971 is a deficient number, since it is larger than the sum of its proper divisors (70773).

1028516971 is an equidigital number, since it uses as much as digits as its factorization.

1028516971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70772.

The product of its (nonzero) digits is 30240, while the sum is 40.

The square root of 1028516971 is about 32070.5000116930. The cubic root of 1028516971 is about 1009.4167043394.

The spelling of 1028516971 in words is "one billion, twenty-eight million, five hundred sixteen thousand, nine hundred seventy-one".