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68215035 = 35719311103
BaseRepresentation
bin1000001000011…
…10000011111011
311202100200102210
410010032003323
5114430340120
610434030203
71455550440
oct404160373
9152320383
1068215035
1135561a69
121aa18363
1311195235
1490b99c7
155ec6ce0
hex410e0fb

68215035 has 64 divisors (see below), whose sum is σ = 135659520. Its totient is φ = 28563840.

The previous prime is 68215009. The next prime is 68215039. The reversal of 68215035 is 53051286.

It is not a de Polignac number, because 68215035 - 210 = 68214011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68214993 and 68215011.

It is not an unprimeable number, because it can be changed into a prime (68215039) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61294 + ... + 62396.

It is an arithmetic number, because the mean of its divisors is an integer number (2119680).

Almost surely, 268215035 is an apocalyptic number.

68215035 is a deficient number, since it is larger than the sum of its proper divisors (67444485).

68215035 is a wasteful number, since it uses less digits than its factorization.

68215035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 68215035 is about 8259.2393717582. The cubic root of 68215035 is about 408.5953019322.

The spelling of 68215035 in words is "sixty-eight million, two hundred fifteen thousand, thirty-five".

Divisors: 1 3 5 7 15 19 21 31 35 57 93 95 105 133 155 217 285 399 465 589 651 665 1085 1103 1767 1995 2945 3255 3309 4123 5515 7721 8835 12369 16545 20615 20957 23163 34193 38605 61845 62871 102579 104785 115815 146699 170965 239351 314355 440097 512895 649667 718053 733495 1196755 1949001 2200485 3248335 3590265 4547669 9745005 13643007 22738345 68215035