7897789284 has 192 divisors, whose sum is σ = 23474583552. Its totient is φ = 2007244800.

The previous prime is 7897789279. The next prime is 7897789397. The reversal of 7897789284 is 4829877987.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11947914 + ... + 11948574.

It is an arithmetic number, because the mean of its divisors is an integer number (122263456).

Almost surely, 2^7897789284 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 7897789284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11737291776).

7897789284 is an abundant number, since it is smaller than the sum of its proper divisors (15576794268).

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

7897789284 is a wasteful number, since it uses less digits than its factorization.

7897789284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 944 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 69.

The square root of 7897789284 is about 88869.5070538821. The cubic root of 7897789284 is about 1991.4459062336.

The spelling of 7897789284 in words is "seven billion, eight hundred ninety-seven million, seven hundred eighty-nine thousand, two hundred eighty-four".