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69832081 = 116348371
BaseRepresentation
bin1000010100110…
…00110110010001
311212101211121101
410022120312101
5120334111311
610532424401
71505364034
oct412306621
9155354541
1069832081
1136466970
121b478101
1311610277
1493bb01b
1561e5ec1
hex4298d91

69832081 has 4 divisors (see below), whose sum is σ = 76180464. Its totient is φ = 63483700.

The previous prime is 69832069. The next prime is 69832097. The reversal of 69832081 is 18023896.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69832081 - 27 = 69831953 is a prime.

It is a super-2 number, since 2×698320812 = 9753039073581122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69832081.

It is not an unprimeable number, because it can be changed into a prime (69832681) 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 3 ways as a sum of consecutive naturals, for example, 3174175 + ... + 3174196.

It is an arithmetic number, because the mean of its divisors is an integer number (19045116).

Almost surely, 269832081 is an apocalyptic number.

It is an amenable number.

69832081 is a deficient number, since it is larger than the sum of its proper divisors (6348383).

69832081 is a wasteful number, since it uses less digits than its factorization.

69832081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6348382.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 69832081 is about 8356.5591603243. The cubic root of 69832081 is about 411.7987222610.

The spelling of 69832081 in words is "sixty-nine million, eight hundred thirty-two thousand, eighty-one".

Divisors: 1 11 6348371 69832081