988290 has 48 divisors (see below), whose sum is σ = 2620800. Its totient is φ = 258336.

The previous prime is 988279. The next prime is 988297. The reversal of 988290 is 92889.

It is not an unprimeable number, because it can be changed into a prime (988297) 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, 7041 + ... + 7179.

It is an arithmetic number, because the mean of its divisors is an integer number (54600).

2⁹⁸⁸²⁹⁰ is an apocalyptic number.

988290 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 988290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1310400).

988290 is an abundant number, since it is smaller than the sum of its proper divisors (1632510).

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

988290 is a wasteful number, since it uses less digits than its factorization.

988290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 988290 is about 994.1277583892. The cubic root of 988290 is about 99.6081330756.

The spelling of 988290 in words is "nine hundred eighty-eight thousand, two hundred ninety".