8434745320 has 16 divisors (see below), whose sum is σ = 18978177060. Its totient is φ = 3373898112.

The previous prime is 8434745317. The next prime is 8434745327. The reversal of 8434745320 is 235474348.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8434218244 + 527076 = 91838^2 + 726^2 .

It is a super-2 number, since 2×8434745320² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 210868633 = 8434745320 / (8 + 4 + 3 + 4 + 7 + 4 + 5 + 3 + 2 + 0).

It is not an unprimeable number, because it can be changed into a prime (8434745327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105434277 + ... + 105434356.

Almost surely, 2^8434745320 is an apocalyptic number.

It is an amenable number.

8434745320 is an abundant number, since it is smaller than the sum of its proper divisors (10543431740).

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

8434745320 is a wasteful number, since it uses less digits than its factorization.

8434745320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210868644 (or 210868640 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 40.

The square root of 8434745320 is about 91840.8695516326. The cubic root of 8434745320 is about 2035.5916371631.

The spelling of 8434745320 in words is "eight billion, four hundred thirty-four million, seven hundred forty-five thousand, three hundred twenty".