8172768 has 24 divisors (see below), whose sum is σ = 21453768. Its totient is φ = 2724224.

The previous prime is 8172713. The next prime is 8172821. The reversal of 8172768 is 8672718.

It is a tau number, because it is divible by the number of its divisors (24).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42471 + ... + 42662.

It is an arithmetic number, because the mean of its divisors is an integer number (893907).

Almost surely, 2^8172768 is an apocalyptic number.

It is an amenable number.

8172768 is an abundant number, since it is smaller than the sum of its proper divisors (13281000).

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

8172768 is a wasteful number, since it uses less digits than its factorization.

8172768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85146 (or 85138 counting only the distinct ones).

The product of its digits is 37632, while the sum is 39.

The square root of 8172768 is about 2858.8053448950. The cubic root of 8172768 is about 201.4294917575.

The spelling of 8172768 in words is "eight million, one hundred seventy-two thousand, seven hundred sixty-eight".