7822780056 has 576 divisors, whose sum is σ = 28454637120. Its totient is φ = 1888634880.

The previous prime is 7822780039. The next prime is 7822780109. The reversal of 7822780056 is 6500872287.

It is a super-2 number, since 2×7822780056² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7822779993 and 7822780020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 128242266 + ... + 128242326.

Almost surely, 2^7822780056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7822780056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14227318560).

7822780056 is an abundant number, since it is smaller than the sum of its proper divisors (20631857064).

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

7822780056 is a wasteful number, since it uses less digits than its factorization.

7822780056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 7822780056 is about 88446.4813093206. The cubic root of 7822780056 is about 1985.1212573258.

The spelling of 7822780056 in words is "seven billion, eight hundred twenty-two million, seven hundred eighty thousand, fifty-six".