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68482021 = 294315479
BaseRepresentation
bin1000001010011…
…11001111100101
311202212020200011
410011033033211
5120012411041
610443450221
71461042016
oct405171745
9152766604
1068482021
1135724613
121ab26971
131125990a
14914900d
15602ae81
hex414f3e5

68482021 has 8 divisors (see below), whose sum is σ = 71020800. Its totient is φ = 65955120.

The previous prime is 68482009. The next prime is 68482031. The reversal of 68482021 is 12028486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68482021 - 221 = 66384869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68482031) 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, 9760 + ... + 15238.

It is an arithmetic number, because the mean of its divisors is an integer number (8877600).

Almost surely, 268482021 is an apocalyptic number.

It is an amenable number.

68482021 is a deficient number, since it is larger than the sum of its proper divisors (2538779).

68482021 is a wasteful number, since it uses less digits than its factorization.

68482021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5939.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 68482021 is about 8275.3864562327. The cubic root of 68482021 is about 409.1276733903.

The spelling of 68482021 in words is "sixty-eight million, four hundred eighty-two thousand, twenty-one".

Divisors: 1 29 431 5479 12499 158891 2361449 68482021