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47181002480 = 2452920336639
BaseRepresentation
bin101011111100001101…
…001111011011110000
311111210010101021000022
4223330031033123300
51233111314034410
633401420343012
73260121622043
oct537415173360
9144703337008
1047181002480
111901149a537
1291889a4a68
1345aba20761
1423d81a2c5a
151362156455
hexafc34f6f0

47181002480 has 40 divisors (see below), whose sum is σ = 113478451200. Its totient is φ = 18221627648.

The previous prime is 47181002467. The next prime is 47181002497. The reversal of 47181002480 is 8420018174.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 47181002480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10166000 + ... + 10170639.

It is an arithmetic number, because the mean of its divisors is an integer number (2836961280).

Almost surely, 247181002480 is an apocalyptic number.

47181002480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47181002480 is an abundant number, since it is smaller than the sum of its proper divisors (66297448720).

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

47181002480 is a wasteful number, since it uses less digits than its factorization.

47181002480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20336681 (or 20336675 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 35.

The spelling of 47181002480 in words is "forty-seven billion, one hundred eighty-one million, two thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 29 40 58 80 116 145 232 290 464 580 1160 2320 20336639 40673278 81346556 101683195 162693112 203366390 325386224 406732780 589762531 813465560 1179525062 1626931120 2359050124 2948812655 4718100248 5897625310 9436200496 11795250620 23590501240 47181002480