8521610340 has 48 divisors (see below), whose sum is σ = 23923529280. Its totient is φ = 2266427520.

The previous prime is 8521610323. The next prime is 8521610347. The reversal of 8521610340 is 430161258.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 8521610298 and 8521610307.

It is not an unprimeable number, because it can be changed into a prime (8521610347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164631 + ... + 210110.

It is an arithmetic number, because the mean of its divisors is an integer number (498406860).

Almost surely, 2^8521610340 is an apocalyptic number.

It is an amenable number.

8521610340 is an abundant number, since it is smaller than the sum of its proper divisors (15401918940).

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

8521610340 is a wasteful number, since it uses less digits than its factorization.

8521610340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375132 (or 375130 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 8521610340 is about 92312.5687000421. The cubic root of 8521610340 is about 2042.5556158316. Note that the first 3 decimals are identical.

Adding to 8521610340 its reverse (430161258), we get a palindrome (8951771598).

The spelling of 8521610340 in words is "eight billion, five hundred twenty-one million, six hundred ten thousand, three hundred forty".