8220135 has 48 divisors (see below), whose sum is σ = 16547328. Its totient is φ = 3410880.

The previous prime is 8220109. The next prime is 8220139. The reversal of 8220135 is 5310228.

8220135 = T₅₁₉ + T₅₂₀ + ... + T₅₇₃.

It is not a de Polignac number, because 8220135 - 2⁸ = 8219879 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8220139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12382 + ... + 13028.

It is an arithmetic number, because the mean of its divisors is an integer number (344736).

Almost surely, 2^8220135 is an apocalyptic number.

8220135 is an abundant number, since it is smaller than the sum of its proper divisors (8327193).

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

8220135 is a wasteful number, since it uses less digits than its factorization.

8220135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 8220135 is about 2867.0777805982. The cubic root of 8220135 is about 201.8178847455.

The spelling of 8220135 in words is "eight million, two hundred twenty thousand, one hundred thirty-five".