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68167480 = 2351704187
BaseRepresentation
bin1000001000000…
…10011100111000
311202021021012111
410010002130320
5114422324410
610433022104
71455262003
oct404023470
9152237174
1068167480
113552a267
121a9b4934
13111796b4
1490a653a
155eb7b8a
hex4102738

68167480 has 16 divisors (see below), whose sum is σ = 153376920. Its totient is φ = 27266976.

The previous prime is 68167457. The next prime is 68167483. The reversal of 68167480 is 8476186.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1704187 = 68167480 / (6 + 8 + 1 + 6 + 7 + 4 + 8 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68167483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852054 + ... + 852133.

Almost surely, 268167480 is an apocalyptic number.

It is an amenable number.

68167480 is an abundant number, since it is smaller than the sum of its proper divisors (85209440).

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

68167480 is a wasteful number, since it uses less digits than its factorization.

68167480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704198 (or 1704194 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 68167480 is about 8256.3599727725. The cubic root of 68167480 is about 408.5003313410.

The spelling of 68167480 in words is "sixty-eight million, one hundred sixty-seven thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 1704187 3408374 6816748 8520935 13633496 17041870 34083740 68167480