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69288055 = 545730323
BaseRepresentation
bin1000010000101…
…00000001110111
311211101012100021
410020110001313
5120214204210
610513030011
71500636664
oct410240167
9154335307
1069288055
1136125161
121b255307
131147c765
1492b8a6b
156139bda
hex4214077

69288055 has 8 divisors (see below), whose sum is σ = 83330352. Its totient is φ = 55307328.

The previous prime is 69288053. The next prime is 69288059. The reversal of 69288055 is 55088296.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69288055 - 21 = 69288053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69288053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12877 + ... + 17446.

It is an arithmetic number, because the mean of its divisors is an integer number (10416294).

Almost surely, 269288055 is an apocalyptic number.

69288055 is a deficient number, since it is larger than the sum of its proper divisors (14042297).

69288055 is a wasteful number, since it uses less digits than its factorization.

69288055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30785.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 69288055 is about 8323.9446778556. The cubic root of 69288055 is about 410.7265621823.

The spelling of 69288055 in words is "sixty-nine million, two hundred eighty-eight thousand, fifty-five".

Divisors: 1 5 457 2285 30323 151615 13857611 69288055