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5185505280 = 21135592861
BaseRepresentation
bin1001101010001010…
…01000100000000000
3111101101102221222010
410311011020200000
541104442132110
62214315212520
7242334032124
oct46505104000
914341387863
105185505280
11222109a95a
121008747140
1364840c527
1437298d584
1520539b020
hex135148800

5185505280 has 192 divisors, whose sum is σ = 16876641600. Its totient is φ = 1358888960.

The previous prime is 5185505243. The next prime is 5185505333. The reversal of 5185505280 is 825055815.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1811050 + ... + 1813910.

It is an arithmetic number, because the mean of its divisors is an integer number (87899175).

Almost surely, 25185505280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5185505280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8438320800).

5185505280 is an abundant number, since it is smaller than the sum of its proper divisors (11691136320).

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

5185505280 is a wasteful number, since it uses less digits than its factorization.

5185505280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950 (or 2930 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 39.

The square root of 5185505280 is about 72010.4525746089. The cubic root of 5185505280 is about 1730.8669827745.

The spelling of 5185505280 in words is "five billion, one hundred eighty-five million, five hundred five thousand, two hundred eighty".