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67848140 = 22510931123
BaseRepresentation
bin1000000101101…
…00011111001100
311201200001011002
410002310133030
5114332120030
610422115432
71452461663
oct402643714
9151601132
1067848140
1135331348
121a87bb78
1311097239
149021dda
155e53245
hex40b47cc

67848140 has 24 divisors (see below), whose sum is σ = 143792880. Its totient is φ = 26889408.

The previous prime is 67848113. The next prime is 67848149. The reversal of 67848140 is 4184876.

It is a junction number, because it is equal to n+sod(n) for n = 67848094 and 67848103.

It is not an unprimeable number, because it can be changed into a prime (67848149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13382 + ... + 17741.

It is an arithmetic number, because the mean of its divisors is an integer number (5991370).

Almost surely, 267848140 is an apocalyptic number.

It is an amenable number.

67848140 is an abundant number, since it is smaller than the sum of its proper divisors (75944740).

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

67848140 is a wasteful number, since it uses less digits than its factorization.

67848140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31241 (or 31239 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 67848140 is about 8236.9982396502. The cubic root of 67848140 is about 407.8614405185.

The spelling of 67848140 in words is "sixty-seven million, eight hundred forty-eight thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 109 218 436 545 1090 2180 31123 62246 124492 155615 311230 622460 3392407 6784814 13569628 16962035 33924070 67848140