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133481465 = 5132418521
BaseRepresentation
bin1111111010011…
…00001111111001
3100022011120010222
413331030033321
5233132401330
621124545425
73210400535
oct775141771
9308146128
10133481465
116938a667
1238852275
1321867320
1413a28bc5
15baba0e5
hex7f4c3f9

133481465 has 16 divisors (see below), whose sum is σ = 173235216. Its totient is φ = 98150400.

The previous prime is 133481419. The next prime is 133481473. The reversal of 133481465 is 564184331.

It can be written as a sum of positive squares in 8 ways, for example, as 2676496 + 130804969 = 1636^2 + 11437^2 .

It is not a de Polignac number, because 133481465 - 214 = 133465081 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11405 + ... + 19925.

It is an arithmetic number, because the mean of its divisors is an integer number (10827201).

Almost surely, 2133481465 is an apocalyptic number.

It is an amenable number.

133481465 is a deficient number, since it is larger than the sum of its proper divisors (39753751).

133481465 is a wasteful number, since it uses less digits than its factorization.

133481465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8780.

The product of its digits is 34560, while the sum is 35.

The square root of 133481465 is about 11553.4178925546. The cubic root of 133481465 is about 511.0620760649.

The spelling of 133481465 in words is "one hundred thirty-three million, four hundred eighty-one thousand, four hundred sixty-five".

Divisors: 1 5 13 65 241 1205 3133 8521 15665 42605 110773 553865 2053561 10267805 26696293 133481465