7287993297 has 12 divisors (see below), whose sum is σ = 11336878644. Its totient is φ = 4484918880.

The previous prime is 7287993287. The next prime is 7287993299. The reversal of 7287993297 is 7923997827.

It can be written as a sum of positive squares in 2 ways, for example, as 2488413456 + 4799579841 = 49884^2 + 69279^2 .

It is not a de Polignac number, because 7287993297 - 2⁴ = 7287993281 is a prime.

It is a super-2 number, since 2×7287993297² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7287993299) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 31145154 + ... + 31145387.

It is an arithmetic number, because the mean of its divisors is an integer number (944739887).

Almost surely, 2^7287993297 is an apocalyptic number.

It is an amenable number.

7287993297 is a deficient number, since it is larger than the sum of its proper divisors (4048885347).

7287993297 is a wasteful number, since it uses less digits than its factorization.

7287993297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62290560 (or 62290557 counting only the distinct ones).

The product of its digits is 24004512, while the sum is 63.

The square root of 7287993297 is about 85369.7446230220. The cubic root of 7287993297 is about 1938.8132906869.

It can be divided in two parts, 72879 and 93297, that added together give a triangular number (166176 = T₅₇₆).

The spelling of 7287993297 in words is "seven billion, two hundred eighty-seven million, nine hundred ninety-three thousand, two hundred ninety-seven".