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52808480 = 255330053
BaseRepresentation
bin1100100101110…
…0101100100000
310200100221121122
43021130230200
5102004332410
65123511412
71210602404
oct311345440
9120327548
1052808480
112789987a
1215828568
13ac2c82a
147029104
154981e55
hex325cb20

52808480 has 24 divisors (see below), whose sum is σ = 124760412. Its totient is φ = 21123328.

The previous prime is 52808479. The next prime is 52808489. The reversal of 52808480 is 8480825.

It can be written as a sum of positive squares in 2 ways, for example, as 45859984 + 6948496 = 6772^2 + 2636^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52808480.

It is not an unprimeable number, because it can be changed into a prime (52808489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164867 + ... + 165186.

Almost surely, 252808480 is an apocalyptic number.

It is an amenable number.

52808480 is an abundant number, since it is smaller than the sum of its proper divisors (71951932).

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

52808480 is a wasteful number, since it uses less digits than its factorization.

52808480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330068 (or 330060 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 35.

The square root of 52808480 is about 7266.9443372025. The cubic root of 52808480 is about 375.1755740801.

The spelling of 52808480 in words is "fifty-two million, eight hundred eight thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 330053 660106 1320212 1650265 2640424 3300530 5280848 6601060 10561696 13202120 26404240 52808480