7920871288 has 16 divisors (see below), whose sum is σ = 16201782360. Its totient is φ = 3600396000.

The previous prime is 7920871249. The next prime is 7920871313. The reversal of 7920871288 is 8821780297.

It is a super-2 number, since 2×7920871288² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 45004863 + ... + 45005038.

Almost surely, 2^7920871288 is an apocalyptic number.

It is an amenable number.

7920871288 is an abundant number, since it is smaller than the sum of its proper divisors (8280911072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7920871288 is a wasteful number, since it uses less digits than its factorization.

7920871288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90009918 (or 90009914 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 52.

The square root of 7920871288 is about 88999.2768959389. The cubic root of 7920871288 is about 1993.3840795971.

Subtracting 7920871288 from its reverse (8821780297), we obtain a palindrome (900909009).

The spelling of 7920871288 in words is "seven billion, nine hundred twenty million, eight hundred seventy-one thousand, two hundred eighty-eight".