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68401782 = 23219011999
BaseRepresentation
bin1000001001110…
…11101001110110
311202201011121100
410010323221312
5120002324112
610442030530
71460256051
oct404735166
9152634540
1068401782
113567a2a9
121aaa8446
131122c237
149127a98
1560122dc
hex413ba76

68401782 has 24 divisors (see below), whose sum is σ = 148356000. Its totient is φ = 22777200.

The previous prime is 68401757. The next prime is 68401787. The reversal of 68401782 is 28710486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68401787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33219 + ... + 35217.

It is an arithmetic number, because the mean of its divisors is an integer number (6181500).

Almost surely, 268401782 is an apocalyptic number.

68401782 is an abundant number, since it is smaller than the sum of its proper divisors (79954218).

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

68401782 is a wasteful number, since it uses less digits than its factorization.

68401782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3908 (or 3905 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 68401782 is about 8270.5369837756. The cubic root of 68401782 is about 408.9678220670.

The spelling of 68401782 in words is "sixty-eight million, four hundred one thousand, seven hundred eighty-two".

Divisors: 1 2 3 6 9 18 1901 1999 3802 3998 5703 5997 11406 11994 17109 17991 34218 35982 3800099 7600198 11400297 22800594 34200891 68401782