1028616 has 16 divisors (see below), whose sum is σ = 2571600. Its totient is φ = 342864.

The previous prime is 1028597. The next prime is 1028617. The reversal of 1028616 is 6168201.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 42859 = 1028616 / (1 + 0 + 2 + 8 + 6 + 1 + 6).

It is not an unprimeable number, because it can be changed into a prime (1028617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21406 + ... + 21453.

It is an arithmetic number, because the mean of its divisors is an integer number (160725).

2^1028616 is an apocalyptic number.

It is an amenable number.

1028616 is an abundant number, since it is smaller than the sum of its proper divisors (1542984).

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

1028616 is a wasteful number, since it uses less digits than its factorization.

1028616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42868 (or 42864 counting only the distinct ones).

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

The square root of 1028616 is about 1014.2070794468. The cubic root of 1028616 is about 100.9449099954.

The spelling of 1028616 in words is "one million, twenty-eight thousand, six hundred sixteen".