8438764620 has 384 divisors, whose sum is σ = 28835896320. Its totient is φ = 1816657920.

The previous prime is 8438764597. The next prime is 8438764627. The reversal of 8438764620 is 264678348.

It is a self number, because there is not a number n which added to its sum of digits gives 8438764620.

It is not an unprimeable number, because it can be changed into a prime (8438764627) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 32835532 + ... + 32835788.

It is an arithmetic number, because the mean of its divisors is an integer number (75093480).

Almost surely, 2^8438764620 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 8438764620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14417948160).

8438764620 is an abundant number, since it is smaller than the sum of its proper divisors (20397131700).

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

8438764620 is a wasteful number, since it uses less digits than its factorization.

8438764620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 48.

The square root of 8438764620 is about 91862.7488158285. The cubic root of 8438764620 is about 2035.9149171964.

The spelling of 8438764620 in words is "eight billion, four hundred thirty-eight million, seven hundred sixty-four thousand, six hundred twenty".