920890 has 16 divisors (see below), whose sum is σ = 1755432. Its totient is φ = 346624.

The previous prime is 920869. The next prime is 920891. The reversal of 920890 is 98029.

It is a happy number.

920890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 657721 + 263169 = 811^2 + 513^2 .

It is not an unprimeable number, because it can be changed into a prime (920891) 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, 2539 + ... + 2878.

2⁹²⁰⁸⁹⁰ is an apocalyptic number.

920890 is a deficient number, since it is larger than the sum of its proper divisors (834542).

920890 is a wasteful number, since it uses less digits than its factorization.

920890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5441.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 920890 is about 959.6301370841. The cubic root of 920890 is about 97.2902349798.

The spelling of 920890 in words is "nine hundred twenty thousand, eight hundred ninety".