Search a number
-
+
47926831680 = 263557132521
BaseRepresentation
bin101100101000101010…
…010110101001000000
311120201002210022100000
4230220222112221000
51241123232103210
634003422200000
73314446230150
oct545052265100
9146632708300
1047926831680
11193644a1002
129356723000
13469a3b7a00
14246926a760
1513a787cac0
hexb28a96a40

47926831680 has 1008 divisors, whose sum is σ = 211966844544. Its totient is φ = 10092625920.

The previous prime is 47926831661. The next prime is 47926831691. The reversal of 47926831680 is 8613862974.

47926831680 is a `hidden beast` number, since 479 + 2 + 6 + 8 + 3 + 168 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 91989820 + ... + 91990340.

It is an arithmetic number, because the mean of its divisors is an integer number (210284568).

Almost surely, 247926831680 is an apocalyptic number.

47926831680 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 47926831680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105983422272).

47926831680 is an abundant number, since it is smaller than the sum of its proper divisors (164040012864).

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

47926831680 is a wasteful number, since it uses less digits than its factorization.

47926831680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 47926831680 in words is "forty-seven billion, nine hundred twenty-six million, eight hundred thirty-one thousand, six hundred eighty".