7922788440 has 96 divisors (see below), whose sum is σ = 27648935280. Its totient is φ = 1810921728.

The previous prime is 7922788421. The next prime is 7922788453. The reversal of 7922788440 is 448872297.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 667827 + ... + 679586.

Almost surely, 2^7922788440 is an apocalyptic number.

7922788440 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7922788440 is an abundant number, since it is smaller than the sum of its proper divisors (19726146840).

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

7922788440 is a wasteful number, since it uses less digits than its factorization.

7922788440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347441 (or 1347430 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 51.

The square root of 7922788440 is about 89010.0468486564. The cubic root of 7922788440 is about 1993.5448915352.

The spelling of 7922788440 in words is "seven billion, nine hundred twenty-two million, seven hundred eighty-eight thousand, four hundred forty".