8491672 has 16 divisors (see below), whose sum is σ = 18196560. Its totient is φ = 3639264.

The previous prime is 8491667. The next prime is 8491673. The reversal of 8491672 is 2761948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8491673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75763 + ... + 75874.

It is an arithmetic number, because the mean of its divisors is an integer number (1137285).

Almost surely, 2^8491672 is an apocalyptic number.

It is an amenable number.

8491672 is an abundant number, since it is smaller than the sum of its proper divisors (9704888).

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

8491672 is a wasteful number, since it uses less digits than its factorization.

8491672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151650 (or 151646 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 8491672 is about 2914.0473571993. The cubic root of 8491672 is about 204.0160822897.

The spelling of 8491672 in words is "eight million, four hundred ninety-one thousand, six hundred seventy-two".