8520870492 has 120 divisors (see below), whose sum is σ = 24827196240. Its totient is φ = 2532487680.

The previous prime is 8520870481. The next prime is 8520870493. The reversal of 8520870492 is 2940780258.

8520870492 is a `hidden beast` number, since 8 + 520 + 87 + 0 + 49 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8520870493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 63942 + ... + 145362.

It is an arithmetic number, because the mean of its divisors is an integer number (206893302).

Almost surely, 2^8520870492 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 8520870492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12413598120).

8520870492 is an abundant number, since it is smaller than the sum of its proper divisors (16306325748).

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

8520870492 is a wasteful number, since it uses less digits than its factorization.

8520870492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81473 (or 81462 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 8520870492 is about 92308.5613147556. The cubic root of 8520870492 is about 2042.4965024183.

The spelling of 8520870492 in words is "eight billion, five hundred twenty million, eight hundred seventy thousand, four hundred ninety-two".