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68806080 = 2632573413
BaseRepresentation
bin1000001100111…
…10010111000000
311210110201012100
410012132113000
5120103243310
610454430400
71463561550
oct406362700
9153421170
1068806080
1135926032
121b062400
1311341275
1491d1160
156091ec0
hex419e5c0

68806080 has 168 divisors, whose sum is σ = 270552672. Its totient is φ = 15722496.

The previous prime is 68806043. The next prime is 68806093. The reversal of 68806080 is 8060886.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18454 + ... + 21866.

Almost surely, 268806080 is an apocalyptic number.

68806080 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 68806080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135276336).

68806080 is an abundant number, since it is smaller than the sum of its proper divisors (201746592).

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

68806080 is a wasteful number, since it uses less digits than its factorization.

68806080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3443 (or 3430 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 68806080 is about 8294.9430377791. The cubic root of 68806080 is about 409.7719929954.

The spelling of 68806080 in words is "sixty-eight million, eight hundred six thousand, eighty".