98784380898 has 384 divisors, whose sum is σ = 278853120000. Its totient is φ = 25572153600.

The previous prime is 98784380897. The next prime is 98784380951. The reversal of 98784380898 is 89808348789.

It is a happy number.

98784380898 is a `hidden beast` number, since 9 + 87 + 84 + 380 + 8 + 98 = 666.

It is a super-2 number, since 2×98784380898² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (98784380897) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 283049628 + ... + 283049976.

It is an arithmetic number, because the mean of its divisors is an integer number (726180000).

Almost surely, 2^98784380898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98784380898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139426560000).

98784380898 is an abundant number, since it is smaller than the sum of its proper divisors (180068739102).

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

98784380898 is a wasteful number, since it uses less digits than its factorization.

98784380898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 222953472, while the sum is 72.

The spelling of 98784380898 in words is "ninety-eight billion, seven hundred eighty-four million, three hundred eighty thousand, eight hundred ninety-eight".