1028042815 has 16 divisors (see below), whose sum is σ = 1271350080. Its totient is φ = 797543680.

The previous prime is 1028042809. The next prime is 1028042843. The reversal of 1028042815 is 5182408201.

It is not a de Polignac number, because 1028042815 - 2⁵ = 1028042783 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19221 + ... + 49249.

It is an arithmetic number, because the mean of its divisors is an integer number (79459380).

Almost surely, 2^1028042815 is an apocalyptic number.

1028042815 is a deficient number, since it is larger than the sum of its proper divisors (243307265).

1028042815 is a wasteful number, since it uses less digits than its factorization.

1028042815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30242.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 1028042815 is about 32063.1067583913. The cubic root of 1028042815 is about 1009.2615636308.

The spelling of 1028042815 in words is "one billion, twenty-eight million, forty-two thousand, eight hundred fifteen".