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71394229 = 1923316127
BaseRepresentation
bin1000100000101…
…10001110110101
311222100012110201
410100112032311
5121234103404
611030120501
71524561304
oct420261665
9158305421
1071394229
11373335a5
121bab0131
1311a3930a
1496a643b
156403ca4
hex44163b5

71394229 has 8 divisors (see below), whose sum is σ = 75479040. Its totient is φ = 67342176.

The previous prime is 71394227. The next prime is 71394283. The reversal of 71394229 is 92249317.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71394229 - 21 = 71394227 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71394221) 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, 3637 + ... + 12490.

It is an arithmetic number, because the mean of its divisors is an integer number (9434880).

Almost surely, 271394229 is an apocalyptic number.

It is an amenable number.

71394229 is a deficient number, since it is larger than the sum of its proper divisors (4084811).

71394229 is a wasteful number, since it uses less digits than its factorization.

71394229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16379.

The product of its digits is 27216, while the sum is 37.

The square root of 71394229 is about 8449.5105775423. The cubic root of 71394229 is about 414.8467600869.

The spelling of 71394229 in words is "seventy-one million, three hundred ninety-four thousand, two hundred twenty-nine".

Divisors: 1 19 233 4427 16127 306413 3757591 71394229