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68472516 = 2237815149
BaseRepresentation
bin1000001010011…
…00111011000100
311202211202122010
410011030323010
5120012110031
610443334220
71461002220
oct405147304
9152752563
1068472516
1135718462
121ab21370
13112554a8
149145780
156028246
hex414cec4

68472516 has 24 divisors (see below), whose sum is σ = 182593600. Its totient is φ = 19563552.

The previous prime is 68472511. The next prime is 68472553. The reversal of 68472516 is 61527486.

It is not an unprimeable number, because it can be changed into a prime (68472511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407491 + ... + 407658.

Almost surely, 268472516 is an apocalyptic number.

It is an amenable number.

68472516 is an abundant number, since it is smaller than the sum of its proper divisors (114121084).

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

68472516 is a wasteful number, since it uses less digits than its factorization.

68472516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815163 (or 815161 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 68472516 is about 8274.8121428828. The cubic root of 68472516 is about 409.1087441472.

The spelling of 68472516 in words is "sixty-eight million, four hundred seventy-two thousand, five hundred sixteen".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 815149 1630298 2445447 3260596 4890894 5706043 9781788 11412086 17118129 22824172 34236258 68472516