8022780 has 96 divisors (see below), whose sum is σ = 25401600. Its totient is φ = 2101824.

The previous prime is 8022779. The next prime is 8022797. The reversal of 8022780 is 872208.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 44731 + ... + 44909.

It is an arithmetic number, because the mean of its divisors is an integer number (264600).

Almost surely, 2^8022780 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 8022780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12700800).

8022780 is an abundant number, since it is smaller than the sum of its proper divisors (17378820).

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

8022780 is a wasteful number, since it uses less digits than its factorization.

8022780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 8022780 is about 2832.4512352378. The cubic root of 8022780 is about 200.1896534344.

Adding to 8022780 its reverse (872208), we get a palindrome (8894988).

The spelling of 8022780 in words is "eight million, twenty-two thousand, seven hundred eighty".