2398289867820 has 1152 divisors, whose sum is σ = 9659043072000. Its totient is φ = 493414225920.

The previous prime is 2398289867807. The next prime is 2398289867887. The reversal of 2398289867820 is 287689828932.

2398289867820 is a `hidden beast` number, since 2 + 398 + 2 + 89 + 86 + 7 + 82 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 2532512587 + ... + 2532513533.

It is an arithmetic number, because the mean of its divisors is an integer number (8384586000).

Almost surely, 2^{2398289867820} is an apocalyptic number.

2398289867820 is a gapful number since it is divisible by the number (20) 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 2398289867820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4829521536000).

2398289867820 is an abundant number, since it is smaller than the sum of its proper divisors (7260753204180).

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

2398289867820 is a wasteful number, since it uses less digits than its factorization.

2398289867820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 334430208, while the sum is 72.

The spelling of 2398289867820 in words is "two trillion, three hundred ninety-eight billion, two hundred eighty-nine million, eight hundred sixty-seven thousand, eight hundred twenty".