898890 has 48 divisors (see below), whose sum is σ = 2304288. Its totient is φ = 224352.

The previous prime is 898889. The next prime is 898897. The reversal of 898890 is 98898.

898890 = 422² + 423² + ... + 426².

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (898897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10789 + ... + 10871.

It is an arithmetic number, because the mean of its divisors is an integer number (48006).

2⁸⁹⁸⁸⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 898890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1152144).

898890 is an abundant number, since it is smaller than the sum of its proper divisors (1405398).

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

898890 is a wasteful number, since it uses less digits than its factorization.

898890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 898890 is about 948.0980961905. The cubic root of 898890 is about 96.5092297900.

The spelling of 898890 in words is "eight hundred ninety-eight thousand, eight hundred ninety".