7572728647 has 8 divisors (see below), whose sum is σ = 8401178880. Its totient is φ = 6767615160.

The previous prime is 7572728641. The next prime is 7572728677. The reversal of 7572728647 is 7468272757.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7572728647 is a prime.

It is a super-2 number, since 2×7572728647² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7572728641) 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 7 ways as a sum of consecutive naturals, for example, 5833503 + ... + 5834800.

It is an arithmetic number, because the mean of its divisors is an integer number (1050147360).

Almost surely, 2^7572728647 is an apocalyptic number.

7572728647 is a deficient number, since it is larger than the sum of its proper divisors (828450233).

7572728647 is a wasteful number, since it uses less digits than its factorization.

7572728647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11668373.

The product of its digits is 9219840, while the sum is 55.

The square root of 7572728647 is about 87021.4263673034. The cubic root of 7572728647 is about 1963.7406565573.

The spelling of 7572728647 in words is "seven billion, five hundred seventy-two million, seven hundred twenty-eight thousand, six hundred forty-seven".