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47836980 = 2236517193
BaseRepresentation
bin1011011001111…
…0111100110100
310100000101000000
42312132330310
544221240410
64425151300
71120415262
oct266367464
9110011000
1047836980
11250036a4
121402b530
139baba09
1464d3432
1542eddc0
hex2d9ef34

47836980 has 168 divisors, whose sum is σ = 160303752. Its totient is φ = 11943936.

The previous prime is 47836969. The next prime is 47837029. The reversal of 47836980 is 8963874.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5143824 + 42693156 = 2268^2 + 6534^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a zygodrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 247764 + ... + 247956.

It is an arithmetic number, because the mean of its divisors is an integer number (954189).

Almost surely, 247836980 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 47836980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80151876).

47836980 is an abundant number, since it is smaller than the sum of its proper divisors (112466772).

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

47836980 is a wasteful number, since it uses less digits than its factorization.

47836980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 47836980 is about 6916.4282689839. The cubic root of 47836980 is about 363.0122255291.

The spelling of 47836980 in words is "forty-seven million, eight hundred thirty-six thousand, nine hundred eighty".