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68030383 = 371838659
BaseRepresentation
bin1000000111000…
…00111110101111
311202000022010211
410003200332233
5114403433013
610430043251
71454151211
oct403407657
9152008124
1068030383
1135446263
121a949527
131112c185
14906c5b1
155e8c23d
hex40e0faf

68030383 has 4 divisors (see below), whose sum is σ = 69869080. Its totient is φ = 66191688.

The previous prime is 68030371. The next prime is 68030401. The reversal of 68030383 is 38303086.

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

It is a cyclic number.

It is not a de Polignac number, because 68030383 - 213 = 68022191 is a prime.

It is a super-2 number, since 2×680303832 = 9256266022253378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68030983) 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, 919293 + ... + 919366.

It is an arithmetic number, because the mean of its divisors is an integer number (17467270).

Almost surely, 268030383 is an apocalyptic number.

68030383 is a deficient number, since it is larger than the sum of its proper divisors (1838697).

68030383 is a wasteful number, since it uses less digits than its factorization.

68030383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838696.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 68030383 is about 8248.0532854729. The cubic root of 68030383 is about 408.2262917905.

The spelling of 68030383 in words is "sixty-eight million, thirty thousand, three hundred eighty-three".

Divisors: 1 37 1838659 68030383