1028895219 has 24 divisors (see below), whose sum is σ = 1622295792. Its totient is φ = 623185920.

The previous prime is 1028895211. The next prime is 1028895227. The reversal of 1028895219 is 9125988201.

It is an interprime number because it is at equal distance from previous prime (1028895211) and next prime (1028895227).

It is not a de Polignac number, because 1028895219 - 2³ = 1028895211 is a prime.

It is a super-2 number, since 2×1028895219² = 2117250743362115922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1028895211) 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 23 ways as a sum of consecutive naturals, for example, 308907 + ... + 312219.

It is an arithmetic number, because the mean of its divisors is an integer number (67595658).

Almost surely, 2^1028895219 is an apocalyptic number.

1028895219 is a deficient number, since it is larger than the sum of its proper divisors (593400573).

1028895219 is a wasteful number, since it uses less digits than its factorization.

1028895219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6467 (or 6464 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 1028895219 is about 32076.3966024864. The cubic root of 1028895219 is about 1009.5404303984.

The spelling of 1028895219 in words is "one billion, twenty-eight million, eight hundred ninety-five thousand, two hundred nineteen".