1028650 has 24 divisors (see below), whose sum is σ = 2187360. Its totient is φ = 352560.

The previous prime is 1028647. The next prime is 1028663. The reversal of 1028650 is 568201.

1028650 = 178² + 179² + ... + 205².

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 1120 + ... + 1819.

It is an arithmetic number, because the mean of its divisors is an integer number (91140).

2^1028650 is an apocalyptic number.

1028650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1028650 is an abundant number, since it is smaller than the sum of its proper divisors (1158710).

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

1028650 is a wasteful number, since it uses less digits than its factorization.

1028650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958 (or 2953 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1028650 is about 1014.2238411712. The cubic root of 1028650 is about 100.9460221983.

The spelling of 1028650 in words is "one million, twenty-eight thousand, six hundred fifty".