1028409335 has 8 divisors (see below), whose sum is σ = 1235373216. Its totient is φ = 821872800.

The previous prime is 1028409311. The next prime is 1028409337. The reversal of 1028409335 is 5339048201.

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

It is not a de Polignac number, because 1028409335 - 2⁸ = 1028409079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1028409295 and 1028409304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028409337) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 101516 + ... + 111185.

It is an arithmetic number, because the mean of its divisors is an integer number (154421652).

Almost surely, 2^1028409335 is an apocalyptic number.

1028409335 is a deficient number, since it is larger than the sum of its proper divisors (206963881).

1028409335 is an equidigital number, since it uses as much as digits as its factorization.

1028409335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213673.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1028409335 is about 32068.8218523849. The cubic root of 1028409335 is about 1009.3814907358.

The spelling of 1028409335 in words is "one billion, twenty-eight million, four hundred nine thousand, three hundred thirty-five".