8019220 has 24 divisors (see below), whose sum is σ = 18371808. Its totient is φ = 2916000.

The previous prime is 8019217. The next prime is 8019227. The reversal of 8019220 is 229108.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8019191 and 8019200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8019227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18006 + ... + 18445.

It is an arithmetic number, because the mean of its divisors is an integer number (765492).

Almost surely, 2^8019220 is an apocalyptic number.

It is an amenable number.

8019220 is an abundant number, since it is smaller than the sum of its proper divisors (10352588).

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

8019220 is a wasteful number, since it uses less digits than its factorization.

8019220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36471 (or 36469 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 8019220 is about 2831.8227345651. The cubic root of 8019220 is about 200.1600385708.

It can be divided in two parts, 80 and 19220, that multiplied together give a square (1537600 = 1240²).

The spelling of 8019220 in words is "eight million, nineteen thousand, two hundred twenty".