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71486713 = 312306023
BaseRepresentation
bin1000100001011…
…00110011111001
311222111220100001
410100230303321
5121300033323
611032113001
71525425034
oct420546371
9158456301
1071486713
1137397031
121bb35761
1311a6c43c
1496cc01b
1564213ad
hex442ccf9

71486713 has 4 divisors (see below), whose sum is σ = 73792768. Its totient is φ = 69180660.

The previous prime is 71486687. The next prime is 71486719. The reversal of 71486713 is 31768417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71486713 - 225 = 37932281 is a prime.

It is a super-2 number, since 2×714867132 = 10220700271088738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71486719) 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 3 ways as a sum of consecutive naturals, for example, 1152981 + ... + 1153042.

It is an arithmetic number, because the mean of its divisors is an integer number (18448192).

Almost surely, 271486713 is an apocalyptic number.

It is an amenable number.

71486713 is a deficient number, since it is larger than the sum of its proper divisors (2306055).

71486713 is a wasteful number, since it uses less digits than its factorization.

71486713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2306054.

The product of its digits is 28224, while the sum is 37.

The square root of 71486713 is about 8454.9815493589. The cubic root of 71486713 is about 415.0258134618.

It can be divided in two parts, 7148 and 6713, that added together give a triangular number (13861 = T166).

The spelling of 71486713 in words is "seventy-one million, four hundred eighty-six thousand, seven hundred thirteen".

Divisors: 1 31 2306023 71486713