1028642 has 16 divisors (see below), whose sum is σ = 1631232. Its totient is φ = 485760.

The previous prime is 1028617. The next prime is 1028647. The reversal of 1028642 is 2468201.

1028642 is nontrivially palindromic in base 5.

1028642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1028647) 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, 2738 + ... + 3090.

It is an arithmetic number, because the mean of its divisors is an integer number (101952).

2^1028642 is an apocalyptic number.

1028642 is a deficient number, since it is larger than the sum of its proper divisors (602590).

1028642 is a wasteful number, since it uses less digits than its factorization.

1028642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1028642 is about 1014.2198972609. The cubic root of 1028642 is about 100.9457605057.

The spelling of 1028642 in words is "one million, twenty-eight thousand, six hundred forty-two".