7898118420 has 96 divisors (see below), whose sum is σ = 22863810816. Its totient is φ = 2035584000.

The previous prime is 7898118413. The next prime is 7898118433. The reversal of 7898118420 is 248118987.

It is a self number, because there is not a number n which added to its sum of digits gives 7898118420.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323440 + ... + 347000.

It is an arithmetic number, because the mean of its divisors is an integer number (238164696).

Almost surely, 2^7898118420 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 7898118420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11431905408).

7898118420 is an abundant number, since it is smaller than the sum of its proper divisors (14965692396).

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

7898118420 is a wasteful number, since it uses less digits than its factorization.

7898118420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23761 (or 23759 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 48.

The square root of 7898118420 is about 88871.3588283649. The cubic root of 7898118420 is about 1991.4735699849.

The spelling of 7898118420 in words is "seven billion, eight hundred ninety-eight million, one hundred eighteen thousand, four hundred twenty".