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68251260 = 223571121779
BaseRepresentation
bin1000001000101…
…10111001111100
311202102112010110
410010112321330
5114433020020
610434510020
71456061160
oct404267174
9152375113
1068251260
1135587200
121aa35310
13111a887c
1490c8ca0
155ed28e0
hex4116e7c

68251260 has 288 divisors, whose sum is σ = 257402880. Its totient is φ = 13178880.

The previous prime is 68251223. The next prime is 68251279. The reversal of 68251260 is 6215286.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 95 ways as a sum of consecutive naturals, for example, 863901 + ... + 863979.

It is an arithmetic number, because the mean of its divisors is an integer number (893760).

Almost surely, 268251260 is an apocalyptic number.

68251260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68251260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128701440).

68251260 is an abundant number, since it is smaller than the sum of its proper divisors (189151620).

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

68251260 is a wasteful number, since it uses less digits than its factorization.

68251260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 68251260 is about 8261.4320792463. The cubic root of 68251260 is about 408.6676161248.

The spelling of 68251260 in words is "sixty-eight million, two hundred fifty-one thousand, two hundred sixty".