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47878277280 = 25351492392801
BaseRepresentation
bin101100100101110001…
…001000100010100000
311120120201102111012220
4230211301020202200
51241023314333110
633554525351040
73313316433141
oct544561104240
9146521374186
1047878277280
111933a0483a9
129342408480
1346903175b2
142462a2bac8
1513a348b370
hexb25c488a0

47878277280 has 192 divisors, whose sum is σ = 152518464000. Its totient is φ = 12624281600.

The previous prime is 47878277273. The next prime is 47878277281. The reversal of 47878277280 is 8277287874.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (47878277281) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 17091880 + ... + 17094680.

It is an arithmetic number, because the mean of its divisors is an integer number (794367000).

Almost surely, 247878277280 is an apocalyptic number.

47878277280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47878277280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76259232000).

47878277280 is an abundant number, since it is smaller than the sum of its proper divisors (104640186720).

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

47878277280 is a wasteful number, since it uses less digits than its factorization.

47878277280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3207 (or 3199 counting only the distinct ones).

The product of its (nonzero) digits is 19668992, while the sum is 60.

The spelling of 47878277280 in words is "forty-seven billion, eight hundred seventy-eight million, two hundred seventy-seven thousand, two hundred eighty".