7243728356 has 36 divisors (see below), whose sum is σ = 13636694400. Its totient is φ = 3365621376.

The previous prime is 7243728319. The next prime is 7243728377. The reversal of 7243728356 is 6538273427.

It is a self number, because there is not a number n which added to its sum of digits gives 7243728356.

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 11 ways as a sum of consecutive naturals, for example, 51665 + ... + 130983.

Almost surely, 2^7243728356 is an apocalyptic number.

It is an amenable number.

7243728356 is a deficient number, since it is larger than the sum of its proper divisors (6392966044).

7243728356 is a wasteful number, since it uses less digits than its factorization.

7243728356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79436 (or 79417 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 47.

The square root of 7243728356 is about 85110.0954998877. The cubic root of 7243728356 is about 1934.8800728688.

The spelling of 7243728356 in words is "seven billion, two hundred forty-three million, seven hundred twenty-eight thousand, three hundred fifty-six".