987812140 has 48 divisors (see below), whose sum is σ = 2374412544. Its totient is φ = 338155200.

The previous prime is 987812131. The next prime is 987812143. The reversal of 987812140 is 41218789.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 987812093 and 987812102.

It is not an unprimeable number, because it can be changed into a prime (987812143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91635 + ... + 101845.

It is an arithmetic number, because the mean of its divisors is an integer number (49466928).

Almost surely, 2^987812140 is an apocalyptic number.

It is an amenable number.

987812140 is an abundant number, since it is smaller than the sum of its proper divisors (1386600404).

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

987812140 is a wasteful number, since it uses less digits than its factorization.

987812140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10918 (or 10916 counting only the distinct ones).

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

The square root of 987812140 is about 31429.4788375499. The cubic root of 987812140 is about 995.9207624474.

The spelling of 987812140 in words is "nine hundred eighty-seven million, eight hundred twelve thousand, one hundred forty".