1028328469 has 16 divisors (see below), whose sum is σ = 1237985280. Its totient is φ = 834427440.

The previous prime is 1028328467. The next prime is 1028328479. The reversal of 1028328469 is 9648238201.

It is not a de Polignac number, because 1028328469 - 2¹ = 1028328467 is a prime.

It is a super-2 number, since 2×1028328469² = 2114918880311767922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028328461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320664 + ... + 323854.

It is an arithmetic number, because the mean of its divisors is an integer number (77374080).

Almost surely, 2^1028328469 is an apocalyptic number.

1028328469 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1028328469 is a deficient number, since it is larger than the sum of its proper divisors (209656811).

1028328469 is a wasteful number, since it uses less digits than its factorization.

1028328469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5640.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 1028328469 is about 32067.5610079719. The cubic root of 1028328469 is about 1009.3550334422.

The spelling of 1028328469 in words is "one billion, twenty-eight million, three hundred twenty-eight thousand, four hundred sixty-nine".