1028790 has 96 divisors (see below), whose sum is σ = 3234816. Its totient is φ = 221760.

The previous prime is 1028777. The next prime is 1028803. The reversal of 1028790 is 978201.

1028790 is a nontrivial binomial coefficient, being equal to C(72, 4).

It is an interprime number because it is at equal distance from previous prime (1028777) and next prime (1028803).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14455 + ... + 14525.

It is an arithmetic number, because the mean of its divisors is an integer number (33696).

2^1028790 is an apocalyptic number.

1028790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1028790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1617408).

1028790 is an abundant number, since it is smaller than the sum of its proper divisors (2206026).

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

1028790 is a wasteful number, since it uses less digits than its factorization.

1028790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1028790 is about 1014.2928571177. The cubic root of 1028790 is about 100.9506015992.

The spelling of 1028790 in words is "one million, twenty-eight thousand, seven hundred ninety".