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71394741 = 3211721159
BaseRepresentation
bin1000100000101…
…10010110110101
311222100020011200
410100112112311
5121234112431
611030123113
71524562635
oct420262665
9158306150
1071394741
1137333a20
121bab0499
1311a39612
1496a66c5
156403ee6
hex44165b5

71394741 has 12 divisors (see below), whose sum is σ = 112500960. Its totient is φ = 43269480.

The previous prime is 71394727. The next prime is 71394751. The reversal of 71394741 is 14749317.

It is not a de Polignac number, because 71394741 - 218 = 71132597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71394696 and 71394705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71394721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 360481 + ... + 360678.

It is an arithmetic number, because the mean of its divisors is an integer number (9375080).

Almost surely, 271394741 is an apocalyptic number.

It is an amenable number.

71394741 is a deficient number, since it is larger than the sum of its proper divisors (41106219).

71394741 is a wasteful number, since it uses less digits than its factorization.

71394741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721176 (or 721173 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 71394741 is about 8449.5408751008. The cubic root of 71394741 is about 414.8477517686.

The spelling of 71394741 in words is "seventy-one million, three hundred ninety-four thousand, seven hundred forty-one".

Divisors: 1 3 9 11 33 99 721159 2163477 6490431 7932749 23798247 71394741