8271878840 has 32 divisors (see below), whose sum is σ = 18624180960. Its totient is φ = 3306537600.

The previous prime is 8271878837. The next prime is 8271878897. The reversal of 8271878840 is 488781728.

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, 7991 + ... + 128870.

It is an arithmetic number, because the mean of its divisors is an integer number (582005655).

Almost surely, 2^8271878840 is an apocalyptic number.

It is an amenable number.

8271878840 is an abundant number, since it is smaller than the sum of its proper divisors (10352302120).

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

8271878840 is a wasteful number, since it uses less digits than its factorization.

8271878840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138383 (or 138379 counting only the distinct ones).

The product of its (nonzero) digits is 1605632, while the sum is 53.

The square root of 8271878840 is about 90949.8699284392. The cubic root of 8271878840 is about 2022.4046486574.

The spelling of 8271878840 in words is "eight billion, two hundred seventy-one million, eight hundred seventy-eight thousand, eight hundred forty".