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69788045 = 5193132347
BaseRepresentation
bin1000010100011…
…10000110001101
311212022121012102
410022032012031
5120331204140
610531444445
71505121455
oct412160615
9155277172
1069788045
1136436878
121b456725
13115c6202
1493a8d65
1561d7e15
hex428e18d

69788045 has 16 divisors (see below), whose sum is σ = 88472640. Its totient is φ = 52700544.

The previous prime is 69788041. The next prime is 69788051. The reversal of 69788045 is 54088796.

It is a cyclic number.

It is not a de Polignac number, because 69788045 - 22 = 69788041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69788041) 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 15 ways as a sum of consecutive naturals, for example, 28562 + ... + 30908.

It is an arithmetic number, because the mean of its divisors is an integer number (5529540).

Almost surely, 269788045 is an apocalyptic number.

It is an amenable number.

69788045 is a deficient number, since it is larger than the sum of its proper divisors (18684595).

69788045 is a wasteful number, since it uses less digits than its factorization.

69788045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 69788045 is about 8353.9239283106. The cubic root of 69788045 is about 411.7121441852.

The spelling of 69788045 in words is "sixty-nine million, seven hundred eighty-eight thousand, forty-five".

Divisors: 1 5 19 95 313 1565 2347 5947 11735 29735 44593 222965 734611 3673055 13957609 69788045