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8080292640 = 2535719472693
BaseRepresentation
bin1111000011001111…
…10111101100100000
3202212010111101200210
413201213313230200
5113022023331030
63413444414120
7404144232330
oct74147675440
922763441623
108080292640
113477129502
1216960a7340
139ba076764
145692090c0
153245aabb0
hex1e19f7b20

8080292640 has 384 divisors, whose sum is σ = 31283159040. Its totient is φ = 1711853568.

The previous prime is 8080292611. The next prime is 8080292641. The reversal of 8080292640 is 462920808.

It is a super-2 number, since 2×80802926402 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8080292641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2999134 + ... + 3001826.

It is an arithmetic number, because the mean of its divisors is an integer number (81466560).

Almost surely, 28080292640 is an apocalyptic number.

8080292640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8080292640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15641579520).

8080292640 is an abundant number, since it is smaller than the sum of its proper divisors (23202866400).

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

8080292640 is a wasteful number, since it uses less digits than its factorization.

8080292640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784 (or 2776 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 8080292640 is about 89890.4479908739. The cubic root of 8080292640 is about 2006.6687922235.

The spelling of 8080292640 in words is "eight billion, eighty million, two hundred ninety-two thousand, six hundred forty".