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68232889 = 538315511
BaseRepresentation
bin1000001000100…
…10011010111001
311202101120221001
410010102122321
5114431423024
610434245001
71455653464
oct404223271
9152346831
1068232889
113557441a
121aa26761
13111a03ba
1490c22db
155ecc244
hex41126b9

68232889 has 8 divisors (see below), whose sum is σ = 70362432. Its totient is φ = 66134640.

The previous prime is 68232869. The next prime is 68232919. The reversal of 68232889 is 98823286.

It is a happy number.

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 68232889 - 29 = 68232377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68232809) 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 7 ways as a sum of consecutive naturals, for example, 3357 + ... + 12154.

It is an arithmetic number, because the mean of its divisors is an integer number (8795304).

Almost surely, 268232889 is an apocalyptic number.

It is an amenable number.

68232889 is a deficient number, since it is larger than the sum of its proper divisors (2129543).

68232889 is a wasteful number, since it uses less digits than its factorization.

68232889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15647.

The product of its digits is 331776, while the sum is 46.

The square root of 68232889 is about 8260.3201511806. The cubic root of 68232889 is about 408.6309461963.

The spelling of 68232889 in words is "sixty-eight million, two hundred thirty-two thousand, eight hundred eighty-nine".

Divisors: 1 53 83 4399 15511 822083 1287413 68232889