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68870247600 = 24352711267759
BaseRepresentation
bin100000000100011111…
…1001001010010110000
320120202200112001221010
41000020333021102300
52112021240410400
651345532230520
74655445305610
oct1001077112260
9216680461833
1068870247600
1127231506400
121142060b440
13665737a5cb
143494970a40
151bd134e450
hex1008fc94b0

68870247600 has 360 divisors, whose sum is σ = 277139484160. Its totient is φ = 14310489600.

The previous prime is 68870247571. The next prime is 68870247601. The reversal of 68870247600 is 674207886.

It is a super-2 number, since 2×688702476002 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 68870247600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68870247601) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 982521 + ... + 1050279.

Almost surely, 268870247600 is an apocalyptic number.

68870247600 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 68870247600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138569742080).

68870247600 is an abundant number, since it is smaller than the sum of its proper divisors (208269236560).

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

68870247600 is a wasteful number, since it uses less digits than its factorization.

68870247600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67809 (or 67787 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 48.

The spelling of 68870247600 in words is "sixty-eight billion, eight hundred seventy million, two hundred forty-seven thousand, six hundred".