801220 has 48 divisors (see below), whose sum is σ = 1975680. Its totient is φ = 267264.

The previous prime is 801217. The next prime is 801247. The reversal of 801220 is 22108.

801220 = T₂₇₃ + T₂₇₄ + ... + T₂₉₂.

It is a self number, because there is not a number n which added to its sum of digits gives 801220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8212 + ... + 8308.

It is an arithmetic number, because the mean of its divisors is an integer number (41160).

2⁸⁰¹²²⁰ 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 801220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (987840).

801220 is an abundant number, since it is smaller than the sum of its proper divisors (1174460).

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

801220 is a wasteful number, since it uses less digits than its factorization.

801220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 801220 is about 895.1089319183. The cubic root of 801220 is about 92.8789421910.

Adding to 801220 its reverse (22108), we get a palindrome (823328).

The spelling of 801220 in words is "eight hundred one thousand, two hundred twenty".