7928267768 has 32 divisors (see below), whose sum is σ = 14993154000. Its totient is φ = 3930151680.

The previous prime is 7928267749. The next prime is 7928267771. The reversal of 7928267768 is 8677628297.

It is a super-2 number, since 2×7928267768² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7928267768.

It is a congruent number.

It is an unprimeable number.

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, 1347938 + ... + 1353806.

Almost surely, 2^7928267768 is an apocalyptic number.

It is an amenable number.

7928267768 is a deficient number, since it is larger than the sum of its proper divisors (7064886232).

7928267768 is a wasteful number, since it uses less digits than its factorization.

7928267768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7295 (or 7291 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 62.

The square root of 7928267768 is about 89040.8207958574. The cubic root of 7928267768 is about 1994.0043580999.

The spelling of 7928267768 in words is "seven billion, nine hundred twenty-eight million, two hundred sixty-seven thousand, seven hundred sixty-eight".