8213520070 has 128 divisors (see below), whose sum is σ = 18705945600. Its totient is φ = 2532902400.

The previous prime is 8213520067. The next prime is 8213520071. The reversal of 8213520070 is 700253128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8213520071) 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 63 ways as a sum of consecutive naturals, for example, 2351025 + ... + 2354515.

It is an arithmetic number, because the mean of its divisors is an integer number (146140200).

Almost surely, 2^8213520070 is an apocalyptic number.

8213520070 is an abundant number, since it is smaller than the sum of its proper divisors (10492425530).

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

8213520070 is a wasteful number, since it uses less digits than its factorization.

8213520070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 8213520070 is about 90628.4727334627. The cubic root of 8213520070 is about 2017.6373440022.

Adding to 8213520070 its reverse (700253128), we get a palindrome (8913773198).

The spelling of 8213520070 in words is "eight billion, two hundred thirteen million, five hundred twenty thousand, seventy".