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68251310 = 2537184463
BaseRepresentation
bin1000001000101…
…10111010101110
311202102112012022
410010112322232
5114433020220
610434510142
71456061261
oct404267256
9152375168
1068251310
1135587246
121aa35352
13111a88ba
1490c8cd8
155ed2925
hex4116eae

68251310 has 16 divisors (see below), whose sum is σ = 126173376. Its totient is φ = 26562528.

The previous prime is 68251307. The next prime is 68251321. The reversal of 68251310 is 1315286.

It is a super-2 number, since 2×682513102 = 9316482633432200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68251310.

It is a congruent number.

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, 91862 + ... + 92601.

It is an arithmetic number, because the mean of its divisors is an integer number (7885836).

Almost surely, 268251310 is an apocalyptic number.

68251310 is a deficient number, since it is larger than the sum of its proper divisors (57922066).

68251310 is a wasteful number, since it uses less digits than its factorization.

68251310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184507.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 68251310 is about 8261.4351053555. The cubic root of 68251310 is about 408.6677159197.

Adding to 68251310 its reverse (1315286), we get a palindrome (69566596).

The spelling of 68251310 in words is "sixty-eight million, two hundred fifty-one thousand, three hundred ten".

Divisors: 1 2 5 10 37 74 185 370 184463 368926 922315 1844630 6825131 13650262 34125655 68251310