8101998 has 32 divisors (see below), whose sum is σ = 18316800. Its totient is φ = 2653848.

The previous prime is 8101997. The next prime is 8102009. The reversal of 8101998 is 8991018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8101997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1915 + ... + 4457.

It is an arithmetic number, because the mean of its divisors is an integer number (572400).

Almost surely, 2^8101998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8101998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9158400).

8101998 is an abundant number, since it is smaller than the sum of its proper divisors (10214802).

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

8101998 is a wasteful number, since it uses less digits than its factorization.

8101998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613 (or 2607 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 8101998 is about 2846.4008853287. The cubic root of 8101998 is about 200.8463963466.

The spelling of 8101998 in words is "eight million, one hundred one thousand, nine hundred ninety-eight".