7257730343 has 4 divisors (see below), whose sum is σ = 7258174728. Its totient is φ = 7257285960.

The previous prime is 7257730313. The next prime is 7257730349. The reversal of 7257730343 is 3430377527.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7257730343 - 2¹² = 7257726247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7257730343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7257730349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196721 + ... + 230682.

It is an arithmetic number, because the mean of its divisors is an integer number (1814543682).

Almost surely, 2^7257730343 is an apocalyptic number.

7257730343 is a deficient number, since it is larger than the sum of its proper divisors (444385).

7257730343 is a wasteful number, since it uses less digits than its factorization.

7257730343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444384.

The product of its (nonzero) digits is 370440, while the sum is 41.

The square root of 7257730343 is about 85192.3138727902. The cubic root of 7257730343 is about 1936.1259657206.

The spelling of 7257730343 in words is "seven billion, two hundred fifty-seven million, seven hundred thirty thousand, three hundred forty-three".