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71334468 = 22321981513
BaseRepresentation
bin1000100000001…
…11101001000100
311222020011111100
410100013221010
5121230200333
611024540100
71524222132
oct420075104
9158204440
1071334468
11372a2707
121ba81630
1311a1805a
14968c752
1563e1213
hex4407a44

71334468 has 18 divisors (see below), whose sum is σ = 180317774. Its totient is φ = 23778144.

The previous prime is 71334457. The next prime is 71334469. The reversal of 71334468 is 86443317.

It can be written as a sum of positive squares in only one way, i.e., 41062464 + 30272004 = 6408^2 + 5502^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1981513 = 71334468 / (7 + 1 + 3 + 3 + 4 + 4 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (71334469) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 990721 + ... + 990792.

Almost surely, 271334468 is an apocalyptic number.

It is an amenable number.

71334468 is an abundant number, since it is smaller than the sum of its proper divisors (108983306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71334468 is a wasteful number, since it uses less digits than its factorization.

71334468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981523 (or 1981518 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 71334468 is about 8445.9734785281. The cubic root of 71334468 is about 414.7309777231.

The spelling of 71334468 in words is "seventy-one million, three hundred thirty-four thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 1981513 3963026 5944539 7926052 11889078 17833617 23778156 35667234 71334468