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68722080 = 25357113181
BaseRepresentation
bin1000001100010…
…01110110100000
311210022102222020
410012021312200
5120043101310
610452541440
71463061630
oct406116640
9153272866
1068722080
1135878a09
121b021880
1311311c6b
1491ac6c0
156077170
hex4189da0

68722080 has 192 divisors, whose sum is σ = 250967808. Its totient is φ = 15482880.

The previous prime is 68722033. The next prime is 68722097. The reversal of 68722080 is 8022786.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 379590 + ... + 379770.

It is an arithmetic number, because the mean of its divisors is an integer number (1307124).

Almost surely, 268722080 is an apocalyptic number.

68722080 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 68722080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125483904).

68722080 is an abundant number, since it is smaller than the sum of its proper divisors (182245728).

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

68722080 is a wasteful number, since it uses less digits than its factorization.

68722080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 68722080 is about 8289.8781655703. The cubic root of 68722080 is about 409.6051721556.

The spelling of 68722080 in words is "sixty-eight million, seven hundred twenty-two thousand, eighty".