890020 has 12 divisors (see below), whose sum is σ = 1869084. Its totient is φ = 356000.

The previous prime is 890011. The next prime is 890027. The reversal of 890020 is 20098.

It can be written as a sum of positive squares in 2 ways, for example, as 430336 + 459684 = 656^2 + 678^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 890020.

It is not an unprimeable number, because it can be changed into a prime (890027) 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, 22231 + ... + 22270.

It is an arithmetic number, because the mean of its divisors is an integer number (155757).

2⁸⁹⁰⁰²⁰ is an apocalyptic number.

It is an amenable number.

890020 is an abundant number, since it is smaller than the sum of its proper divisors (979064).

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

890020 is a wasteful number, since it uses less digits than its factorization.

890020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44510 (or 44508 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 890020 is about 943.4087131249. The cubic root of 890020 is about 96.1907376798.

The spelling of 890020 in words is "eight hundred ninety thousand, twenty".