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81095416 = 2337273971
BaseRepresentation
bin1001101010101…
…10101011111000
312122121001222221
410311112223320
5131230023131
612014053424
72003204533
oct465265370
9178531887
1081095416
114185a206
12231aa274
1313a54b6c
14aaada1a
1571bd411
hex4d56af8

81095416 has 16 divisors (see below), whose sum is σ = 156164040. Its totient is φ = 39451680.

The previous prime is 81095383. The next prime is 81095437. The reversal of 81095416 is 61459018.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136690 + ... + 137281.

Almost surely, 281095416 is an apocalyptic number.

It is an amenable number.

81095416 is a deficient number, since it is larger than the sum of its proper divisors (75068624).

81095416 is a wasteful number, since it uses less digits than its factorization.

81095416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274014 (or 274010 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 81095416 is about 9005.2993287286. The cubic root of 81095416 is about 432.8446978640.

The spelling of 81095416 in words is "eighty-one million, ninety-five thousand, four hundred sixteen".

Divisors: 1 2 4 8 37 74 148 296 273971 547942 1095884 2191768 10136927 20273854 40547708 81095416