7845920 has 24 divisors (see below), whose sum is σ = 18536364. Its totient is φ = 3138304.

The previous prime is 7845913. The next prime is 7845931. The reversal of 7845920 is 295487.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7333264 + 512656 = 2708^2 + 716^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 24359 + ... + 24678.

Almost surely, 2^7845920 is an apocalyptic number.

It is an amenable number.

7845920 is an abundant number, since it is smaller than the sum of its proper divisors (10690444).

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

7845920 is a wasteful number, since it uses less digits than its factorization.

7845920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49052 (or 49044 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 7845920 is about 2801.0569433698. The cubic root of 7845920 is about 198.7076673681.

The spelling of 7845920 in words is "seven million, eight hundred forty-five thousand, nine hundred twenty".