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68132992 = 272323143
BaseRepresentation
bin1000000111110…
…10000010000000
311202012111220011
410003322002000
5114420223432
610432154304
71455056314
oct403720200
9152174804
1068132992
1135506364
121a998994
1311166aa5
149097b44
155eac847
hex40fa080

68132992 has 32 divisors (see below), whose sum is σ = 141641280. Its totient is φ = 32583936.

The previous prime is 68132989. The next prime is 68133001. The reversal of 68132992 is 29923186.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8628 + ... + 14515.

It is an arithmetic number, because the mean of its divisors is an integer number (4426290).

Almost surely, 268132992 is an apocalyptic number.

It is an amenable number.

68132992 is an abundant number, since it is smaller than the sum of its proper divisors (73508288).

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

68132992 is a wasteful number, since it uses less digits than its factorization.

68132992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23180 (or 23168 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 68132992 is about 8254.2711368115. The cubic root of 68132992 is about 408.4314288086.

The spelling of 68132992 in words is "sixty-eight million, one hundred thirty-two thousand, nine hundred ninety-two".

Divisors: 1 2 4 8 16 23 32 46 64 92 128 184 368 736 1472 2944 23143 46286 92572 185144 370288 532289 740576 1064578 1481152 2129156 2962304 4258312 8516624 17033248 34066496 68132992