8172672 has 32 divisors (see below), whose sum is σ = 21709680. Its totient is φ = 2724096.

The previous prime is 8172611. The next prime is 8172673. The reversal of 8172672 is 2762718.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (8172673) 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, 10258 + ... + 11025.

Almost surely, 2^8172672 is an apocalyptic number.

It is an amenable number.

8172672 is an abundant number, since it is smaller than the sum of its proper divisors (13537008).

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

8172672 is a wasteful number, since it uses less digits than its factorization.

8172672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21300 (or 21288 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 8172672 is about 2858.7885546154. The cubic root of 8172672 is about 201.4287030689.

The spelling of 8172672 in words is "eight million, one hundred seventy-two thousand, six hundred seventy-two".