8456620420 has 48 divisors (see below), whose sum is σ = 18898185600. Its totient is φ = 3167645184.

The previous prime is 8456620409. The next prime is 8456620421. The reversal of 8456620420 is 240266548.

It is a self number, because there is not a number n which added to its sum of digits gives 8456620420.

It is not an unprimeable number, because it can be changed into a prime (8456620421) 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, 5167 + ... + 130153.

It is an arithmetic number, because the mean of its divisors is an integer number (393712200).

Almost surely, 2^8456620420 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 8456620420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9449092800).

8456620420 is an abundant number, since it is smaller than the sum of its proper divisors (10441565180).

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

8456620420 is a wasteful number, since it uses less digits than its factorization.

8456620420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125212 (or 125210 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 8456620420 is about 91959.8848411632. The cubic root of 8456620420 is about 2037.3498539163.

Adding to 8456620420 its reverse (240266548), we get a palindrome (8696886968).

The spelling of 8456620420 in words is "eight billion, four hundred fifty-six million, six hundred twenty thousand, four hundred twenty".