8987140 has 24 divisors (see below), whose sum is σ = 18977112. Its totient is φ = 3575040.

The previous prime is 8987137. The next prime is 8987149. The reversal of 8987140 is 417898.

It can be written as a sum of positive squares in 4 ways, for example, as 3678724 + 5308416 = 1918^2 + 2304^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 8987140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8987149) 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, 2800 + ... + 5080.

It is an arithmetic number, because the mean of its divisors is an integer number (790713).

Almost surely, 2^8987140 is an apocalyptic number.

It is an amenable number.

8987140 is an abundant number, since it is smaller than the sum of its proper divisors (9989972).

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

8987140 is a wasteful number, since it uses less digits than its factorization.

8987140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2487 (or 2485 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 8987140 is about 2997.8559004729. The cubic root of 8987140 is about 207.9092614572.

The spelling of 8987140 in words is "eight million, nine hundred eighty-seven thousand, one hundred forty".