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68064912 = 24322320551
BaseRepresentation
bin1000000111010…
…01011010010000
311202002001111200
410003221122100
5114411034122
610430511200
71454353656
oct403513220
9152061450
1068064912
113546a1a3
121a965500
1311141ac6
14907add6
155e975ac
hex40e9690

68064912 has 60 divisors (see below), whose sum is σ = 198778944. Its totient is φ = 21700800.

The previous prime is 68064881. The next prime is 68064917. The reversal of 68064912 is 21946086.

68064912 is a `hidden beast` number, since 6 + 8 + 0 + 649 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68064917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6964 + ... + 13587.

Almost surely, 268064912 is an apocalyptic number.

It is an amenable number.

68064912 is an abundant number, since it is smaller than the sum of its proper divisors (130714032).

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

68064912 is a wasteful number, since it uses less digits than its factorization.

68064912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20588 (or 20579 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 68064912 is about 8250.1461805231. The cubic root of 68064912 is about 408.2953455521.

The spelling of 68064912 in words is "sixty-eight million, sixty-four thousand, nine hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 16 18 23 24 36 46 48 69 72 92 138 144 184 207 276 368 414 552 828 1104 1656 3312 20551 41102 61653 82204 123306 164408 184959 246612 328816 369918 472673 493224 739836 945346 986448 1418019 1479672 1890692 2836038 2959344 3781384 4254057 5672076 7562768 8508114 11344152 17016228 22688304 34032456 68064912