7889696820 has 144 divisors (see below), whose sum is σ = 24334652160. Its totient is φ = 2068754688.

The previous prime is 7889696809. The next prime is 7889696827. The reversal of 7889696820 is 286969887.

It is a super-3 number, since 3×7889696820³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7889696827) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3937939 + ... + 3939941.

It is an arithmetic number, because the mean of its divisors is an integer number (168990640).

Almost surely, 2^7889696820 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 7889696820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12167326080).

7889696820 is an abundant number, since it is smaller than the sum of its proper divisors (16444955340).

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

7889696820 is a wasteful number, since it uses less digits than its factorization.

7889696820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374 (or 2369 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The square root of 7889696820 is about 88823.9653471967. The cubic root of 7889696820 is about 1990.7654959241.

The spelling of 7889696820 in words is "seven billion, eight hundred eighty-nine million, six hundred ninety-six thousand, eight hundred twenty".