8126727840 has 576 divisors, whose sum is σ = 35746824960. Its totient is φ = 1687910400.

The previous prime is 8126727809. The next prime is 8126727863. The reversal of 8126727840 is 487276218.

8126727840 is a `hidden beast` number, since 81 + 267 + 278 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3657930 + ... + 3660150.

It is an arithmetic number, because the mean of its divisors is an integer number (62060460).

Almost surely, 2^8126727840 is an apocalyptic number.

8126727840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8126727840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17873412480).

8126727840 is an abundant number, since it is smaller than the sum of its proper divisors (27620097120).

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

8126727840 is a wasteful number, since it uses less digits than its factorization.

8126727840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274 (or 2249 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 8126727840 is about 90148.3657089800. The cubic root of 8126727840 is about 2010.5053752617.

The spelling of 8126727840 in words is "eight billion, one hundred twenty-six million, seven hundred twenty-seven thousand, eight hundred forty".