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7140068 = 22131741197
BaseRepresentation
bin11011001111001011100100
3111102202022222
4123033023210
53311440233
6413011512
7114455345
oct33171344
914382288
107140068
114037491
122483b98
13162cbc0
14d3c0cc
15960898
hex6cf2e4

7140068 has 48 divisors (see below), whose sum is σ = 14669424. Its totient is φ = 3010560.

The previous prime is 7140059. The next prime is 7140071. The reversal of 7140068 is 8600417.

It can be written as a sum of positive squares in 8 ways, for example, as 484 + 7139584 = 22^2 + 2672^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 36146 + ... + 36342.

It is an arithmetic number, because the mean of its divisors is an integer number (305613).

Almost surely, 27140068 is an apocalyptic number.

It is an amenable number.

7140068 is an abundant number, since it is smaller than the sum of its proper divisors (7529356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7140068 is a wasteful number, since it uses less digits than its factorization.

7140068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 7140068 is about 2672.0905673274. The cubic root of 7140068 is about 192.5606083401.

The spelling of 7140068 in words is "seven million, one hundred forty thousand, sixty-eight".

Divisors: 1 2 4 13 17 26 34 41 52 68 82 164 197 221 394 442 533 697 788 884 1066 1394 2132 2561 2788 3349 5122 6698 8077 9061 10244 13396 16154 18122 32308 36244 43537 87074 105001 137309 174148 210002 274618 420004 549236 1785017 3570034 7140068