798818220 has 96 divisors (see below), whose sum is σ = 2522419200. Its totient is φ = 209829312.

The previous prime is 798818213. The next prime is 798818233. The reversal of 798818220 is 22818897.

It is a happy number.

It is a super-2 number, since 2×798818220² = 1276221097207936800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25141 + ... + 47219.

It is an arithmetic number, because the mean of its divisors is an integer number (26275200).

Almost surely, 2^798818220 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 798818220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1261209600).

798818220 is an abundant number, since it is smaller than the sum of its proper divisors (1723600980).

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

798818220 is a wasteful number, since it uses less digits than its factorization.

798818220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22164 (or 22156 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 798818220 is about 28263.3724102415. The cubic root of 798818220 is about 927.8604300479.

The spelling of 798818220 in words is "seven hundred ninety-eight million, eight hundred eighteen thousand, two hundred twenty".