988780 has 24 divisors (see below), whose sum is σ = 2236752. Its totient is φ = 364992.

The previous prime is 988763. The next prime is 988783. The reversal of 988780 is 87889.

It is not an unprimeable number, because it can be changed into a prime (988783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1642 + ... + 2161.

It is an arithmetic number, because the mean of its divisors is an integer number (93198).

2⁹⁸⁸⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

988780 is an abundant number, since it is smaller than the sum of its proper divisors (1247972).

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

988780 is a wasteful number, since it uses less digits than its factorization.

988780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3825 (or 3823 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 988780 is about 994.3741750468. The cubic root of 988780 is about 99.6245924553.

The spelling of 988780 in words is "nine hundred eighty-eight thousand, seven hundred eighty".