8197438320 has 120 divisors (see below), whose sum is σ = 28201288752. Its totient is φ = 2132659200.

The previous prime is 8197438313. The next prime is 8197438339. The reversal of 8197438320 is 238347918.

8197438320 is a `hidden beast` number, since 8 + 197 + 438 + 3 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109326 + ... + 168365.

Almost surely, 2^8197438320 is an apocalyptic number.

8197438320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8197438320 is an abundant number, since it is smaller than the sum of its proper divisors (20003850432).

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

8197438320 is a wasteful number, since it uses less digits than its factorization.

8197438320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277751 (or 277742 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 8197438320 is about 90539.7057649295. The cubic root of 8197438320 is about 2016.3196653907.

The spelling of 8197438320 in words is "eight billion, one hundred ninety-seven million, four hundred thirty-eight thousand, three hundred twenty".