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68926280 = 2352277591
BaseRepresentation
bin1000001101110…
…11101101001000
311210200211002012
410012323231020
5120121120110
610501155052
71464602153
oct406735510
9153624065
1068926280
11359a8375
121b0bba88
1311383ba7
149222c9a
1560b7905
hex41bbb48

68926280 has 32 divisors (see below), whose sum is σ = 155787840. Its totient is φ = 27445440.

The previous prime is 68926267. The next prime is 68926307. The reversal of 68926280 is 8262986.

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 7 ways as a sum of consecutive naturals, for example, 5285 + ... + 12875.

It is an arithmetic number, because the mean of its divisors is an integer number (4868370).

Almost surely, 268926280 is an apocalyptic number.

It is an amenable number.

68926280 is an abundant number, since it is smaller than the sum of its proper divisors (86861560).

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

68926280 is a wasteful number, since it uses less digits than its factorization.

68926280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7829 (or 7825 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 68926280 is about 8302.1852544978. The cubic root of 68926280 is about 410.0104696910.

The spelling of 68926280 in words is "sixty-eight million, nine hundred twenty-six thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 227 454 908 1135 1816 2270 4540 7591 9080 15182 30364 37955 60728 75910 151820 303640 1723157 3446314 6892628 8615785 13785256 17231570 34463140 68926280