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68120700 = 223521719237
BaseRepresentation
bin1000000111101…
…11000001111100
311202011220000220
410003313001330
5114414330300
610432021340
71455005424
oct403670174
9152156026
1068120700
11354a80aa
121a991850
131116130b
149093484
155ea8da0
hex40f707c

68120700 has 216 divisors, whose sum is σ = 226204272. Its totient is φ = 15759360.

The previous prime is 68120693. The next prime is 68120707. The reversal of 68120700 is 702186.

It is an interprime number because it is at equal distance from previous prime (68120693) and next prime (68120707).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68120707) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 1841082 + ... + 1841118.

It is an arithmetic number, because the mean of its divisors is an integer number (1047242).

Almost surely, 268120700 is an apocalyptic number.

68120700 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 68120700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113102136).

68120700 is an abundant number, since it is smaller than the sum of its proper divisors (158083572).

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

68120700 is a wasteful number, since it uses less digits than its factorization.

68120700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 68120700 is about 8253.5265190099. The cubic root of 68120700 is about 408.4068653731.

Adding to 68120700 its reverse (702186), we get a palindrome (68822886).

The spelling of 68120700 in words is "sixty-eight million, one hundred twenty thousand, seven hundred".