8013345220 has 24 divisors (see below), whose sum is σ = 16850170008. Its totient is φ = 3201120000.

The previous prime is 8013345211. The next prime is 8013345257. The reversal of 8013345220 is 225433108.

It can be written as a sum of positive squares in 4 ways, for example, as 792084736 + 7221260484 = 28144^2 + 84978^2 .

It is a super-2 number, since 2×8013345220² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248031 + ... + 278470.

It is an arithmetic number, because the mean of its divisors is an integer number (702090417).

Almost surely, 2^8013345220 is an apocalyptic number.

It is an amenable number.

8013345220 is an abundant number, since it is smaller than the sum of its proper divisors (8836824788).

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

8013345220 is a wasteful number, since it uses less digits than its factorization.

8013345220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527271 (or 527269 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 8013345220 is about 89517.2900617529. The cubic root of 8013345220 is about 2001.1114838541. Note that the first 3 decimals are identical.

Adding to 8013345220 its reverse (225433108), we get a palindrome (8238778328).

The spelling of 8013345220 in words is "eight billion, thirteen million, three hundred forty-five thousand, two hundred twenty".