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71414949 = 3471373697
BaseRepresentation
bin1000100000110…
…11010010100101
311222101020220010
410100123102211
5121240234244
611030400433
71525005564
oct420332245
9158336803
1071414949
1137348121
121bb00119
1311a45888
1496adbdb
156409eb9
hex441b4a5

71414949 has 16 divisors (see below), whose sum is σ = 97982208. Its totient is φ = 46244352.

The previous prime is 71414911. The next prime is 71414969. The reversal of 71414949 is 94941417.

It is not a de Polignac number, because 71414949 - 27 = 71414821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71414969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17469 + ... + 21165.

It is an arithmetic number, because the mean of its divisors is an integer number (6123888).

Almost surely, 271414949 is an apocalyptic number.

It is an amenable number.

71414949 is a deficient number, since it is larger than the sum of its proper divisors (26567259).

71414949 is a wasteful number, since it uses less digits than its factorization.

71414949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884.

The product of its digits is 36288, while the sum is 39.

The square root of 71414949 is about 8450.7365951141. The cubic root of 71414949 is about 414.8868884166.

It can be divided in two parts, 7141 and 4949, that added together give a triangular number (12090 = T155).

The spelling of 71414949 in words is "seventy-one million, four hundred fourteen thousand, nine hundred forty-nine".

Divisors: 1 3 47 137 141 411 3697 6439 11091 19317 173759 506489 521277 1519467 23804983 71414949