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68365389 = 353429971
BaseRepresentation
bin1000001001100…
…10110001001101
311202122022200110
410010302301031
5120000143024
610441150233
71460045001
oct404626115
9152568613
1068365389
1135654a24
121aa8b379
13112187c1
149118701
156006629
hex4132c4d

68365389 has 8 divisors (see below), whose sum is σ = 92873952. Its totient is φ = 44716880.

The previous prime is 68365387. The next prime is 68365411. The reversal of 68365389 is 98356386.

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 68365389 - 21 = 68365387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68365387) 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, 214827 + ... + 215144.

It is an arithmetic number, because the mean of its divisors is an integer number (11609244).

Almost surely, 268365389 is an apocalyptic number.

It is an amenable number.

68365389 is a deficient number, since it is larger than the sum of its proper divisors (24508563).

68365389 is a wasteful number, since it uses less digits than its factorization.

68365389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430027.

The product of its digits is 933120, while the sum is 48.

The square root of 68365389 is about 8268.3365316126. The cubic root of 68365389 is about 408.8952790919.

The spelling of 68365389 in words is "sixty-eight million, three hundred sixty-five thousand, three hundred eighty-nine".

Divisors: 1 3 53 159 429971 1289913 22788463 68365389