8211776240 has 40 divisors (see below), whose sum is σ = 19168491888. Its totient is φ = 3271616000.

The previous prime is 8211776219. The next prime is 8211776323. The reversal of 8211776240 is 426771128.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 8211776194 and 8211776203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184397 + ... + 224556.

Almost surely, 2^8211776240 is an apocalyptic number.

8211776240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8211776240 is an abundant number, since it is smaller than the sum of its proper divisors (10956715648).

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

8211776240 is a wasteful number, since it uses less digits than its factorization.

8211776240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409217 (or 409211 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 8211776240 is about 90618.8514603887. The cubic root of 8211776240 is about 2017.4945442635.

The spelling of 8211776240 in words is "eight billion, two hundred eleven million, seven hundred seventy-six thousand, two hundred forty".