6972831728 has 10 divisors (see below), whose sum is σ = 13509861504. Its totient is φ = 3486415856.

The previous prime is 6972831727. The next prime is 6972831757. The reversal of 6972831728 is 8271382796.

It is a self number, because there is not a number n which added to its sum of digits gives 6972831728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6972831727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217900976 + ... + 217901007.

Almost surely, 2^6972831728 is an apocalyptic number.

It is an amenable number.

6972831728 is a deficient number, since it is larger than the sum of its proper divisors (6537029776).

6972831728 is a wasteful number, since it uses less digits than its factorization.

6972831728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435801991 (or 435801985 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 53.

The square root of 6972831728 is about 83503.4833285415. The cubic root of 6972831728 is about 1910.4531629445.

The spelling of 6972831728 in words is "six billion, nine hundred seventy-two million, eight hundred thirty-one thousand, seven hundred twenty-eight".