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68195427 = 319262969
BaseRepresentation
bin1000001000010…
…01010001100011
311202022200112120
410010021101203
5114424223202
610433355323
71455436326
oct404112143
9152280476
1068195427
1135549263
121aa08b43
1311189331
1490b27bd
155ec10bc
hex4109463

68195427 has 12 divisors (see below), whose sum is σ = 95966280. Its totient is φ = 43070112.

The previous prime is 68195419. The next prime is 68195441. The reversal of 68195427 is 72459186.

It is not a de Polignac number, because 68195427 - 23 = 68195419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68195497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30402 + ... + 32567.

It is an arithmetic number, because the mean of its divisors is an integer number (7997190).

Almost surely, 268195427 is an apocalyptic number.

68195427 is a deficient number, since it is larger than the sum of its proper divisors (27770853).

68195427 is a wasteful number, since it uses less digits than its factorization.

68195427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63010 (or 62991 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 68195427 is about 8258.0522521960. The cubic root of 68195427 is about 408.5561487629.

It can be divided in two parts, 6819 and 5427, that added together give a triangular number (12246 = T156).

The spelling of 68195427 in words is "sixty-eight million, one hundred ninety-five thousand, four hundred twenty-seven".

Divisors: 1 3 19 57 361 1083 62969 188907 1196411 3589233 22731809 68195427