8730981 has 12 divisors (see below), whose sum is σ = 14413152. Its totient is φ = 4989096.

The previous prime is 8730977. The next prime is 8730983. The reversal of 8730981 is 1890378.

It is not a de Polignac number, because 8730981 - 2² = 8730977 is a prime.

It is a super-2 number, since 2×8730981² = 152460058444722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8730983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69231 + ... + 69356.

It is an arithmetic number, because the mean of its divisors is an integer number (1201096).

Almost surely, 2^8730981 is an apocalyptic number.

It is an amenable number.

8730981 is a deficient number, since it is larger than the sum of its proper divisors (5682171).

8730981 is a wasteful number, since it uses less digits than its factorization.

8730981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138600 (or 138597 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 8730981 is about 2954.8233449734. The cubic root of 8730981 is about 205.9148562577.

The spelling of 8730981 in words is "eight million, seven hundred thirty thousand, nine hundred eighty-one".