987408172 has 12 divisors (see below), whose sum is σ = 1748783736. Its totient is φ = 487755680.

The previous prime is 987408167. The next prime is 987408181. The reversal of 987408172 is 271804789.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1486729 + ... + 1487392.

It is an arithmetic number, because the mean of its divisors is an integer number (145731978).

Almost surely, 2^987408172 is an apocalyptic number.

It is an amenable number.

987408172 is a deficient number, since it is larger than the sum of its proper divisors (761375564).

987408172 is a wasteful number, since it uses less digits than its factorization.

987408172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974208 (or 2974206 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 987408172 is about 31423.0516022871. The cubic root of 987408172 is about 995.7849825901.

The spelling of 987408172 in words is "nine hundred eighty-seven million, four hundred eight thousand, one hundred seventy-two".