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68080455 = 32512291231
BaseRepresentation
bin1000000111011…
…01001101000111
311202002211211100
410003231031013
5114412033310
610431111143
71454450202
oct403551507
9152084740
1068080455
113547a943
121a9724b3
1311148bc1
149082939
155e9bec0
hex40ed347

68080455 has 24 divisors (see below), whose sum is σ = 118198080. Its totient is φ = 36250560.

The previous prime is 68080451. The next prime is 68080471. The reversal of 68080455 is 55408086.

It is a happy number.

It is not a de Polignac number, because 68080455 - 22 = 68080451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68080451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54690 + ... + 55920.

It is an arithmetic number, because the mean of its divisors is an integer number (4924920).

Almost surely, 268080455 is an apocalyptic number.

68080455 is a deficient number, since it is larger than the sum of its proper divisors (50117625).

68080455 is a wasteful number, since it uses less digits than its factorization.

68080455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471 (or 2468 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 68080455 is about 8251.0881100616. The cubic root of 68080455 is about 408.3264220219.

The spelling of 68080455 in words is "sixty-eight million, eighty thousand, four hundred fifty-five".

Divisors: 1 3 5 9 15 45 1229 1231 3687 3693 6145 6155 11061 11079 18435 18465 55305 55395 1512899 4538697 7564495 13616091 22693485 68080455