7217073236 has 12 divisors (see below), whose sum is σ = 12836925780. Its totient is φ = 3549380160.

The previous prime is 7217073233. The next prime is 7217073247. The reversal of 7217073236 is 6323707127.

It can be written as a sum of positive squares in 2 ways, for example, as 745836100 + 6471237136 = 27310^2 + 80444^2 .

It is a super-2 number, since 2×7217073236² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7217073236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7217073233) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14788841 + ... + 14789328.

It is an arithmetic number, because the mean of its divisors is an integer number (1069743815).

Almost surely, 2^7217073236 is an apocalyptic number.

It is an amenable number.

7217073236 is a deficient number, since it is larger than the sum of its proper divisors (5619852544).

7217073236 is a wasteful number, since it uses less digits than its factorization.

7217073236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29578234 (or 29578232 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 38.

The square root of 7217073236 is about 84953.3591801996. The cubic root of 7217073236 is about 1932.5038632692.

The spelling of 7217073236 in words is "seven billion, two hundred seventeen million, seventy-three thousand, two hundred thirty-six".