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52080020 = 2255774513
BaseRepresentation
bin1100011010101…
…0110110010100
310121222221100122
43012222312110
5101313030040
65100131112
71201446536
oct306526624
9117887318
1052080020
1127441543
1215536a98
13aa360a5
146cb9856
15488b1b5
hex31aad94

52080020 has 24 divisors (see below), whose sum is σ = 109581864. Its totient is φ = 20791296.

The previous prime is 52080019. The next prime is 52080037. The reversal of 52080020 is 2008025.

It is a happy number.

52080020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4276624 + 47803396 = 2068^2 + 6914^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9284 + ... + 13796.

It is an arithmetic number, because the mean of its divisors is an integer number (4565911).

Almost surely, 252080020 is an apocalyptic number.

It is an amenable number.

52080020 is an abundant number, since it is smaller than the sum of its proper divisors (57501844).

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

52080020 is a wasteful number, since it uses less digits than its factorization.

52080020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5099 (or 5097 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 52080020 is about 7216.6488067523. The cubic root of 52080020 is about 373.4424762384.

Adding to 52080020 its reverse (2008025), we get a palindrome (54088045).

The spelling of 52080020 in words is "fifty-two million, eighty thousand, twenty".

Divisors: 1 2 4 5 10 20 577 1154 2308 2885 4513 5770 9026 11540 18052 22565 45130 90260 2604001 5208002 10416004 13020005 26040010 52080020