8145320 has 32 divisors (see below), whose sum is σ = 18419400. Its totient is φ = 3241728.

The previous prime is 8145299. The next prime is 8145323. The reversal of 8145320 is 235418.

It can be written as a sum of positive squares in 4 ways, for example, as 5026564 + 3118756 = 2242^2 + 1766^2 .

It is not an unprimeable number, because it can be changed into a prime (8145323) 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, 10382 + ... + 11138.

Almost surely, 2^8145320 is an apocalyptic number.

It is an amenable number.

8145320 is an abundant number, since it is smaller than the sum of its proper divisors (10274080).

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

8145320 is a wasteful number, since it uses less digits than its factorization.

8145320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037 (or 1033 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 8145320 is about 2854.0007007708. Note that the first 3 decimals coincide. The cubic root of 8145320 is about 201.2037405089.

The spelling of 8145320 in words is "eight million, one hundred forty-five thousand, three hundred twenty".