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68392445 = 51117193379
BaseRepresentation
bin1000001001110…
…01010111111101
311202200200210112
410010321113331
5120002024240
610441515405
71460216612
oct404712775
9152620715
1068392445
1135673290
121aaa2b65
1311227c04
149124509
15600e665
hex41395fd

68392445 has 32 divisors (see below), whose sum is σ = 95541120. Its totient is φ = 46448640.

The previous prime is 68392439. The next prime is 68392451. The reversal of 68392445 is 54429386.

It is an interprime number because it is at equal distance from previous prime (68392439) and next prime (68392451).

It is not a de Polignac number, because 68392445 - 212 = 68388349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180266 + ... + 180644.

It is an arithmetic number, because the mean of its divisors is an integer number (2985660).

Almost surely, 268392445 is an apocalyptic number.

It is an amenable number.

68392445 is a deficient number, since it is larger than the sum of its proper divisors (27148675).

68392445 is a wasteful number, since it uses less digits than its factorization.

68392445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605.

The product of its digits is 207360, while the sum is 41.

The square root of 68392445 is about 8269.9724908853. The cubic root of 68392445 is about 408.9492128719.

The spelling of 68392445 in words is "sixty-eight million, three hundred ninety-two thousand, four hundred forty-five".

Divisors: 1 5 11 17 55 85 187 193 379 935 965 1895 2123 3281 4169 6443 10615 16405 20845 32215 36091 70873 73147 180455 354365 365735 804617 1243499 4023085 6217495 13678489 68392445