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71483144 = 2329308117
BaseRepresentation
bin1000100001010…
…11111100001000
311222111201102212
410100223330020
5121244430034
611032044252
71525411445
oct420537410
9158451385
1071483144
1137394387
121bb33688
1311a6a925
1496ca9cc
1564202ce
hex442bf08

71483144 has 16 divisors (see below), whose sum is σ = 138653100. Its totient is φ = 34508992.

The previous prime is 71483143. The next prime is 71483201. The reversal of 71483144 is 44138417.

It can be written as a sum of positive squares in 2 ways, for example, as 61811044 + 9672100 = 7862^2 + 3110^2 .

It is a super-2 number, since 2×714831442 = 10219679752249472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71483144.

It is not an unprimeable number, because it can be changed into a prime (71483141) 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 3 ways as a sum of consecutive naturals, for example, 153827 + ... + 154290.

Almost surely, 271483144 is an apocalyptic number.

It is an amenable number.

71483144 is a deficient number, since it is larger than the sum of its proper divisors (67169956).

71483144 is a wasteful number, since it uses less digits than its factorization.

71483144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308152 (or 308148 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 71483144 is about 8454.7704877188. The cubic root of 71483144 is about 415.0189065756.

The spelling of 71483144 in words is "seventy-one million, four hundred eighty-three thousand, one hundred forty-four".

Divisors: 1 2 4 8 29 58 116 232 308117 616234 1232468 2464936 8935393 17870786 35741572 71483144