7197218320 has 40 divisors (see below), whose sum is σ = 16743510936. Its totient is φ = 2877170688.

The previous prime is 7197218299. The next prime is 7197218339. The reversal of 7197218320 is 238127917.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 497468416 + 6699749904 = 22304^2 + 81852^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112684 + ... + 164596.

Almost surely, 2^7197218320 is an apocalyptic number.

It is an amenable number.

7197218320 is an abundant number, since it is smaller than the sum of its proper divisors (9546292616).

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

7197218320 is a wasteful number, since it uses less digits than its factorization.

7197218320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53659 (or 53653 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 7197218320 is about 84836.4209523245. The cubic root of 7197218320 is about 1930.7300628731.

The spelling of 7197218320 in words is "seven billion, one hundred ninety-seven million, two hundred eighteen thousand, three hundred twenty".