988720 has 40 divisors (see below), whose sum is σ = 2437344. Its totient is φ = 371712.

The previous prime is 988711. The next prime is 988727. The reversal of 988720 is 27889.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (988727) by changing a digit.

988720 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 997 + ... + 1723.

2⁹⁸⁸⁷²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 988720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1218672).

988720 is an abundant number, since it is smaller than the sum of its proper divisors (1448624).

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

988720 is a wasteful number, since it uses less digits than its factorization.

988720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 751 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 988720 is about 994.3440048595. The cubic root of 988720 is about 99.6225773133.

The spelling of 988720 in words is "nine hundred eighty-eight thousand, seven hundred twenty".