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68780112 = 2432949411
BaseRepresentation
bin1000001100110…
…00000001010000
311210102101120120
410012120001100
5120101430422
610454110240
71463423052
oct406300120
9153371516
1068780112
1135908575
121b04b380
13113324bb
1491c58d2
15608945c
hex4198050

68780112 has 40 divisors (see below), whose sum is σ = 183812640. Its totient is φ = 22135680.

The previous prime is 68780111. The next prime is 68780183. The reversal of 68780112 is 21108786.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68780111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23314 + ... + 26097.

It is an arithmetic number, because the mean of its divisors is an integer number (4595316).

Almost surely, 268780112 is an apocalyptic number.

It is an amenable number.

68780112 is an abundant number, since it is smaller than the sum of its proper divisors (115032528).

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

68780112 is a wasteful number, since it uses less digits than its factorization.

68780112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49451 (or 49445 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 68780112 is about 8293.3775990244. The cubic root of 68780112 is about 409.7204360300.

Adding to 68780112 its reverse (21108786), we get a palindrome (89888898).

The spelling of 68780112 in words is "sixty-eight million, seven hundred eighty thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 12 16 24 29 48 58 87 116 174 232 348 464 696 1392 49411 98822 148233 197644 296466 395288 592932 790576 1185864 1432919 2371728 2865838 4298757 5731676 8597514 11463352 17195028 22926704 34390056 68780112