108987515 has 48 divisors (see below), whose sum is σ = 172559520. Its totient is φ = 65318400.

The previous prime is 108987449. The next prime is 108987517. The reversal of 108987515 is 515789801.

It is a happy number.

It is not a de Polignac number, because 108987515 - 2²⁰ = 107938939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108987517) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59615 + ... + 61415.

It is an arithmetic number, because the mean of its divisors is an integer number (3594990).

Almost surely, 2^108987515 is an apocalyptic number.

108987515 is a deficient number, since it is larger than the sum of its proper divisors (63572005).

108987515 is a wasteful number, since it uses less digits than its factorization.

108987515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852 (or 1845 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 44.

The square root of 108987515 is about 10439.7085687293. The cubic root of 108987515 is about 477.6673791657.

The spelling of 108987515 in words is "one hundred eight million, nine hundred eighty-seven thousand, five hundred fifteen".