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47520980 = 22513182773
BaseRepresentation
bin1011010101000…
…1110011010100
310022102022112022
42311101303110
544131132410
64414312312
71114631063
oct265216324
9108368468
1047520980
1124908241
1213ab8698
139acac30
1464501da
15428a455
hex2d51cd4

47520980 has 24 divisors (see below), whose sum is σ = 107471112. Its totient is φ = 17546112.

The previous prime is 47520961. The next prime is 47520983. The reversal of 47520980 is 8902574.

It is a happy number.

47520980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6330256 + 41190724 = 2516^2 + 6418^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47520980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47520983) 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 7 ways as a sum of consecutive naturals, for example, 91127 + ... + 91646.

It is an arithmetic number, because the mean of its divisors is an integer number (4477963).

Almost surely, 247520980 is an apocalyptic number.

It is an amenable number.

47520980 is an abundant number, since it is smaller than the sum of its proper divisors (59950132).

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

47520980 is a wasteful number, since it uses less digits than its factorization.

47520980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182795 (or 182793 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 47520980 is about 6893.5462571887. The cubic root of 47520980 is about 362.2111341211.

The spelling of 47520980 in words is "forty-seven million, five hundred twenty thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 182773 365546 731092 913865 1827730 2376049 3655460 4752098 9504196 11880245 23760490 47520980