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67828075 = 5275371103
BaseRepresentation
bin1000000101011…
…11100101101011
311201122000121221
410002233211223
5114330444300
610421442511
71452346330
oct402574553
9151560557
1067828075
1135318267
121a870437
131108b073
149018987
155e4c31a
hex40af96b

67828075 has 48 divisors (see below), whose sum is σ = 100279296. Its totient is φ = 44553600.

The previous prime is 67828073. The next prime is 67828087. The reversal of 67828075 is 57082876.

It is a happy number.

It is not a de Polignac number, because 67828075 - 21 = 67828073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67828073) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 658474 + ... + 658576.

It is an arithmetic number, because the mean of its divisors is an integer number (2089152).

Almost surely, 267828075 is an apocalyptic number.

67828075 is a deficient number, since it is larger than the sum of its proper divisors (32451221).

67828075 is a wasteful number, since it uses less digits than its factorization.

67828075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 67828075 is about 8235.7801694800. The cubic root of 67828075 is about 407.8212303930.

The spelling of 67828075 in words is "sixty-seven million, eight hundred twenty-eight thousand, seventy-five".

Divisors: 1 5 7 25 35 53 71 103 175 265 355 371 497 515 721 1325 1775 1855 2485 2575 3605 3763 5459 7313 9275 12425 18025 18815 26341 27295 36565 38213 51191 94075 131705 136475 182825 191065 255955 387589 658525 955325 1279775 1937945 2713123 9689725 13565615 67828075