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68079960 = 23335132373
BaseRepresentation
bin1000000111011…
…01000101011000
311202002211011000
410003231011120
5114412024320
610431105000
71454445564
oct403550530
9152084130
1068079960
113547a533
121a972160
1311148900
1490826a4
155e9bc90
hex40ed158

68079960 has 192 divisors, whose sum is σ = 246391200. Its totient is φ = 16713216.

The previous prime is 68079929. The next prime is 68079961. The reversal of 68079960 is 6997086.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68079961) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 182334 + ... + 182706.

Almost surely, 268079960 is an apocalyptic number.

68079960 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 68079960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123195600).

68079960 is an abundant number, since it is smaller than the sum of its proper divisors (178311240).

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

68079960 is a wasteful number, since it uses less digits than its factorization.

68079960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 68079960 is about 8251.0581139633. The cubic root of 68079960 is about 408.3254323984.

The spelling of 68079960 in words is "sixty-eight million, seventy-nine thousand, nine hundred sixty".