987827988 has 24 divisors (see below), whose sum is σ = 2634208192. Its totient is φ = 282236544.

The previous prime is 987827969. The next prime is 987828013. The reversal of 987827988 is 889728789.

It is a super-2 number, since 2×987827988² = 1951608267752256288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5879845 + ... + 5880012.

Almost surely, 2^987827988 is an apocalyptic number.

It is an amenable number.

987827988 is an abundant number, since it is smaller than the sum of its proper divisors (1646380204).

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

987827988 is a wasteful number, since it uses less digits than its factorization.

987827988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11759871 (or 11759869 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 66.

The square root of 987827988 is about 31429.7309565322. The cubic root of 987827988 is about 995.9260884492.

The spelling of 987827988 in words is "nine hundred eighty-seven million, eight hundred twenty-seven thousand, nine hundred eighty-eight".