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69711968 = 2517128147
BaseRepresentation
bin1000010011110…
…11100001100000
311212011201211202
410021323201200
5120321240333
610530100332
71504353614
oct411734140
9155151752
1069711968
11363946a7
121b41a6a8
131159a6b1
149389344
1561c05e8
hex427b860

69711968 has 24 divisors (see below), whose sum is σ = 145319832. Its totient is φ = 32805376.

The previous prime is 69711947. The next prime is 69711973. The reversal of 69711968 is 86911796.

It is a congruent number.

It is an unprimeable number.

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, 63530 + ... + 64617.

It is an arithmetic number, because the mean of its divisors is an integer number (6054993).

Almost surely, 269711968 is an apocalyptic number.

69711968 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

69711968 is an abundant number, since it is smaller than the sum of its proper divisors (75607864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69711968 is a wasteful number, since it uses less digits than its factorization.

69711968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128174 (or 128166 counting only the distinct ones).

The product of its digits is 163296, while the sum is 47.

The square root of 69711968 is about 8349.3693174994. The cubic root of 69711968 is about 411.5624852517.

The spelling of 69711968 in words is "sixty-nine million, seven hundred eleven thousand, nine hundred sixty-eight".

Divisors: 1 2 4 8 16 17 32 34 68 136 272 544 128147 256294 512588 1025176 2050352 2178499 4100704 4356998 8713996 17427992 34855984 69711968