8102020 has 48 divisors (see below), whose sum is σ = 17967600. Its totient is φ = 3064320.

The previous prime is 8102009. The next prime is 8102041. The reversal of 8102020 is 202018.

It can be written as a sum of positive squares in 8 ways, for example, as 81796 + 8020224 = 286^2 + 2832^2 .

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, 35266 + ... + 35494.

It is an arithmetic number, because the mean of its divisors is an integer number (374325).

Almost surely, 2^8102020 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 8102020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8983800).

8102020 is an abundant number, since it is smaller than the sum of its proper divisors (9865580).

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

8102020 is a wasteful number, since it uses less digits than its factorization.

8102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 326 counting only the distinct ones).

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

The square root of 8102020 is about 2846.4047498555. The cubic root of 8102020 is about 200.8465781378.

Adding to 8102020 its reverse (202018), we get a palindrome (8304038).

The spelling of 8102020 in words is "eight million, one hundred two thousand, twenty".