8991672 has 16 divisors (see below), whose sum is σ = 22479240. Its totient is φ = 2997216.

The previous prime is 8991667. The next prime is 8991679. The reversal of 8991672 is 2761998.

8991672 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8991679) 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 3 ways as a sum of consecutive naturals, for example, 187303 + ... + 187350.

Almost surely, 2^8991672 is an apocalyptic number.

It is an amenable number.

8991672 is an abundant number, since it is smaller than the sum of its proper divisors (13487568).

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

8991672 is a wasteful number, since it uses less digits than its factorization.

8991672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374662 (or 374658 counting only the distinct ones).

The product of its digits is 54432, while the sum is 42.

The square root of 8991672 is about 2998.6116787607. The cubic root of 8991672 is about 207.9442034756.

The spelling of 8991672 in words is "eight million, nine hundred ninety-one thousand, six hundred seventy-two".