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68301823 = 452315101
BaseRepresentation
bin1000001001000…
…11001111111111
311202112002111011
410010203033333
5114441124243
610435540051
71456361452
oct404431777
9152462434
1068301823
1135611197
121aa5a627
13111c58a5
1490dd499
155ee289d
hex41233ff

68301823 has 4 divisors (see below), whose sum is σ = 68321448. Its totient is φ = 68282200.

The previous prime is 68301817. The next prime is 68301851. The reversal of 68301823 is 32810386.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68301823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68301323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3028 + ... + 12073.

It is an arithmetic number, because the mean of its divisors is an integer number (17080362).

Almost surely, 268301823 is an apocalyptic number.

68301823 is a deficient number, since it is larger than the sum of its proper divisors (19625).

68301823 is a wasteful number, since it uses less digits than its factorization.

68301823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19624.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 68301823 is about 8264.4916964082. The cubic root of 68301823 is about 408.7685097935.

The spelling of 68301823 in words is "sixty-eight million, three hundred one thousand, eight hundred twenty-three".

Divisors: 1 4523 15101 68301823