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68141880 = 233252961107
BaseRepresentation
bin1000000111111…
…00001100111000
311202012222002100
410003330030320
5114421020010
610432303400
71455124242
oct403741470
9152188070
1068141880
1135512004
121a9a1b60
131116ab51
14909b092
155eb02c0
hex40fc338

68141880 has 192 divisors, whose sum is σ = 235029600. Its totient is φ = 17095680.

The previous prime is 68141837. The next prime is 68141929. The reversal of 68141880 is 8814186.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 636787 + ... + 636893.

Almost surely, 268141880 is an apocalyptic number.

68141880 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 68141880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117514800).

68141880 is an abundant number, since it is smaller than the sum of its proper divisors (166887720).

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

68141880 is a wasteful number, since it uses less digits than its factorization.

68141880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 68141880 is about 8254.8095071903. The cubic root of 68141880 is about 408.4491880986.

The spelling of 68141880 in words is "sixty-eight million, one hundred forty-one thousand, eight hundred eighty".