8172740 has 12 divisors (see below), whose sum is σ = 17162796. Its totient is φ = 3269088.

The previous prime is 8172713. The next prime is 8172821. The reversal of 8172740 is 472718.

It can be written as a sum of positive squares in 2 ways, for example, as 5234944 + 2937796 = 2288^2 + 1714^2 .

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, 204299 + ... + 204338.

It is an arithmetic number, because the mean of its divisors is an integer number (1430233).

Almost surely, 2^8172740 is an apocalyptic number.

It is an amenable number.

8172740 is an abundant number, since it is smaller than the sum of its proper divisors (8990056).

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

8172740 is a wasteful number, since it uses less digits than its factorization.

8172740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408646 (or 408644 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 8172740 is about 2858.8004477403. The cubic root of 8172740 is about 201.4292617240.

The spelling of 8172740 in words is "eight million, one hundred seventy-two thousand, seven hundred forty".