8502012820 has 24 divisors (see below), whose sum is σ = 20404831104. Its totient is φ = 2914975776.

The previous prime is 8502012793. The next prime is 8502012901. The reversal of 8502012820 is 282102058.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30364192 + ... + 30364471.

It is an arithmetic number, because the mean of its divisors is an integer number (850201296).

Almost surely, 2^8502012820 is an apocalyptic number.

It is an amenable number.

8502012820 is an abundant number, since it is smaller than the sum of its proper divisors (11902818284).

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

8502012820 is a wasteful number, since it uses less digits than its factorization.

8502012820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60728679 (or 60728677 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 8502012820 is about 92206.3599758715. The cubic root of 8502012820 is about 2040.9886291668.

Adding to 8502012820 its reverse (282102058), we get a palindrome (8784114878).

The spelling of 8502012820 in words is "eight billion, five hundred two million, twelve thousand, eight hundred twenty".