1028490 has 16 divisors (see below), whose sum is σ = 2468448. Its totient is φ = 274256.

The previous prime is 1028479. The next prime is 1028509. The reversal of 1028490 is 948201.

It is a self number, because there is not a number n which added to its sum of digits gives 1028490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17112 + ... + 17171.

It is an arithmetic number, because the mean of its divisors is an integer number (154278).

2^1028490 is an apocalyptic number.

1028490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1028490 is an abundant number, since it is smaller than the sum of its proper divisors (1439958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1028490 is a wasteful number, since it uses less digits than its factorization.

1028490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34293.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1028490 is about 1014.1449600526. The cubic root of 1028490 is about 100.9407880886.

The spelling of 1028490 in words is "one million, twenty-eight thousand, four hundred ninety".