1020489 has 8 divisors (see below), whose sum is σ = 1404672. Its totient is φ = 658320.

The previous prime is 1020457. The next prime is 1020491. The reversal of 1020489 is 9840201.

1020489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020489 - 2⁵ = 1020457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020419) 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, 5394 + ... + 5579.

It is an arithmetic number, because the mean of its divisors is an integer number (175584).

2^1020489 is an apocalyptic number.

It is an amenable number.

1020489 is a deficient number, since it is larger than the sum of its proper divisors (384183).

1020489 is a wasteful number, since it uses less digits than its factorization.

1020489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11007.

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

The square root of 1020489 is about 1010.1925559021. The cubic root of 1020489 is about 100.6783546117.

The spelling of 1020489 in words is "one million, twenty thousand, four hundred eighty-nine".