1028919 has 8 divisors (see below), whose sum is σ = 1392640. Its totient is φ = 675576.

The previous prime is 1028903. The next prime is 1028939. The reversal of 1028919 is 9198201.

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

It is not a de Polignac number, because 1028919 - 2⁴ = 1028903 is a prime.

It is a super-2 number, since 2×1028919² = 2117348617122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2359 + ... + 2760.

It is an arithmetic number, because the mean of its divisors is an integer number (174080).

2^1028919 is an apocalyptic number.

1028919 is a deficient number, since it is larger than the sum of its proper divisors (363721).

1028919 is an equidigital number, since it uses as much as digits as its factorization.

1028919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5189.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 1028919 is about 1014.3564462259. The cubic root of 1028919 is about 100.9548208222.

The spelling of 1028919 in words is "one million, twenty-eight thousand, nine hundred nineteen".