8731144 has 8 divisors (see below), whose sum is σ = 16370910. Its totient is φ = 4365568.

The previous prime is 8731141. The next prime is 8731153. The reversal of 8731144 is 4411378.

It can be written as a sum of positive squares in only one way, i.e., 7628644 + 1102500 = 2762^2 + 1050^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (8731141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545689 + ... + 545704.

Almost surely, 2^8731144 is an apocalyptic number.

It is an amenable number.

8731144 is a deficient number, since it is larger than the sum of its proper divisors (7639766).

8731144 is a wasteful number, since it uses less digits than its factorization.

8731144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091399 (or 1091395 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 8731144 is about 2954.8509268659. The cubic root of 8731144 is about 205.9161376682.

The spelling of 8731144 in words is "eight million, seven hundred thirty-one thousand, one hundred forty-four".