8121798 has 24 divisors (see below), whose sum is σ = 18205200. Its totient is φ = 2613744.

The previous prime is 8121793. The next prime is 8121811. The reversal of 8121798 is 8971218.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8121793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7258 + ... + 8301.

It is an arithmetic number, because the mean of its divisors is an integer number (758550).

Almost surely, 2^8121798 is an apocalyptic number.

8121798 is an abundant number, since it is smaller than the sum of its proper divisors (10083402).

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

8121798 is a wasteful number, since it uses less digits than its factorization.

8121798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15596 (or 15593 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 8121798 is about 2849.8768394441. The cubic root of 8121798 is about 201.0098755080.

The spelling of 8121798 in words is "eight million, one hundred twenty-one thousand, seven hundred ninety-eight".