987980 has 24 divisors (see below), whose sum is σ = 2371488. Its totient is φ = 338688.

The previous prime is 987979. The next prime is 987983. The reversal of 987980 is 89789.

987980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×987980² = 1952208960800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (987983) 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, 3389 + ... + 3668.

It is an arithmetic number, because the mean of its divisors is an integer number (98812).

2⁹⁸⁷⁹⁸⁰ is an apocalyptic number.

It is an amenable number.

987980 is an abundant number, since it is smaller than the sum of its proper divisors (1383508).

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

987980 is a wasteful number, since it uses less digits than its factorization.

987980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7073 (or 7071 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 987980 is about 993.9718305868. The cubic root of 987980 is about 99.5977171888.

The spelling of 987980 in words is "nine hundred eighty-seven thousand, nine hundred eighty".