Search a number
-
+
47475011808 = 2532721929319
BaseRepresentation
bin101100001101101110…
…110011000011100000
311112112121121110222200
4230031232303003200
51234212100334213
633450522133200
73300321641100
oct541556630340
9145477543880
1047475011808
1119152452054
12924b351200
134627901883
142425257200
15137cd80273
hexb0dbb30e0

47475011808 has 324 divisors, whose sum is σ = 165767598360. Its totient is φ = 12849000192.

The previous prime is 47475011791. The next prime is 47475011813. The reversal of 47475011808 is 80811057474.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 5089773 + ... + 5099091.

It is an arithmetic number, because the mean of its divisors is an integer number (511628390).

Almost surely, 247475011808 is an apocalyptic number.

47475011808 is a gapful number since it is divisible by the number (48) 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 47475011808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82883799180).

47475011808 is an abundant number, since it is smaller than the sum of its proper divisors (118292586552).

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

47475011808 is a wasteful number, since it uses less digits than its factorization.

47475011808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9387 (or 9350 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The spelling of 47475011808 in words is "forty-seven billion, four hundred seventy-five million, eleven thousand, eight hundred eight".