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48138580 = 2257249121
BaseRepresentation
bin1011011110100…
…0100101010100
310100120200201101
42313220211110
544310413310
64435435444
71123112500
oct267504524
9110520641
1048138580
112519a256
1214155b84
139c86089
146571300
15435d43a
hex2de8954

48138580 has 36 divisors (see below), whose sum is σ = 117598068. Its totient is φ = 16504320.

The previous prime is 48138569. The next prime is 48138593. The reversal of 48138580 is 8583184.

48138580 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 2 ways, for example, as 8976016 + 39162564 = 2996^2 + 6258^2 .

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 11 ways as a sum of consecutive naturals, for example, 23581 + ... + 25540.

It is an arithmetic number, because the mean of its divisors is an integer number (3266613).

Almost surely, 248138580 is an apocalyptic number.

It is an amenable number.

48138580 is an abundant number, since it is smaller than the sum of its proper divisors (69459488).

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

48138580 is a wasteful number, since it uses less digits than its factorization.

48138580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49144 (or 49135 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 48138580 is about 6938.1971721766. The cubic root of 48138580 is about 363.7735277626.

The spelling of 48138580 in words is "forty-eight million, one hundred thirty-eight thousand, five hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 49 70 98 140 196 245 490 980 49121 98242 196484 245605 343847 491210 687694 982420 1375388 1719235 2406929 3438470 4813858 6876940 9627716 12034645 24069290 48138580