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71214580 = 2254398111
BaseRepresentation
bin1000011111010…
…10010111110100
311222000002001001
410033222113310
5121212331310
611022213044
71523212453
oct417522764
9158002031
1071214580
1137220628
121ba24184
13119a5608
14965ab9a
1563ba93a
hex43ea5f4

71214580 has 24 divisors (see below), whose sum is σ = 149909760. Its totient is φ = 28417440.

The previous prime is 71214571. The next prime is 71214589. The reversal of 71214580 is 8541217.

It is an interprime number because it is at equal distance from previous prime (71214571) and next prime (71214589).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71214589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4725 + ... + 12835.

It is an arithmetic number, because the mean of its divisors is an integer number (6246240).

Almost surely, 271214580 is an apocalyptic number.

It is an amenable number.

71214580 is an abundant number, since it is smaller than the sum of its proper divisors (78695180).

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

71214580 is a wasteful number, since it uses less digits than its factorization.

71214580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8559 (or 8557 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 71214580 is about 8438.8731475239. The cubic root of 71214580 is about 414.4985087662.

Adding to 71214580 its reverse (8541217), we get a palindrome (79755797).

The spelling of 71214580 in words is "seventy-one million, two hundred fourteen thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 439 878 1756 2195 4390 8111 8780 16222 32444 40555 81110 162220 3560729 7121458 14242916 17803645 35607290 71214580