987611240 has 128 divisors (see below), whose sum is σ = 2866233600. Its totient is φ = 297185280.

The previous prime is 987611221. The next prime is 987611249. The reversal of 987611240 is 42116789.

987611240 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 2×987611240² = 1950751922748675200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 987611194 and 987611203.

It is not an unprimeable number, because it can be changed into a prime (987611249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83792 + ... + 94848.

It is an arithmetic number, because the mean of its divisors is an integer number (22392450).

Almost surely, 2^987611240 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 987611240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1433116800).

987611240 is an abundant number, since it is smaller than the sum of its proper divisors (1878622360).

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

987611240 is a wasteful number, since it uses less digits than its factorization.

987611240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11115 (or 11111 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 987611240 is about 31426.2826309444. The cubic root of 987611240 is about 995.8532414959.

It can be divided in two parts, 98761 and 1240, that added together give a palindrome (100001).

The spelling of 987611240 in words is "nine hundred eighty-seven million, six hundred eleven thousand, two hundred forty".