8195720 has 32 divisors (see below), whose sum is σ = 19860120. Its totient is φ = 3025920.

The previous prime is 8195713. The next prime is 8195729. The reversal of 8195720 is 275918.

It can be written as a sum of positive squares in 4 ways, for example, as 5654884 + 2540836 = 2378^2 + 1594^2 .

It is not an unprimeable number, because it can be changed into a prime (8195729) 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 7 ways as a sum of consecutive naturals, for example, 7361 + ... + 8400.

Almost surely, 2^8195720 is an apocalyptic number.

It is an amenable number.

8195720 is an abundant number, since it is smaller than the sum of its proper divisors (11664400).

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

8195720 is a wasteful number, since it uses less digits than its factorization.

8195720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15785 (or 15781 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 8195720 is about 2862.8167946971. The cubic root of 8195720 is about 201.6178770785.

The spelling of 8195720 in words is "eight million, one hundred ninety-five thousand, seven hundred twenty".