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52102686 = 238683781
BaseRepresentation
bin1100011011000…
…0011000011110
310122001002110010
43012300120132
5101314241221
65100424050
71201602606
oct306603036
9118032403
1052102686
1127457579
1215548026
13aa434bc
146cc3c06
154892c76
hex31b061e

52102686 has 8 divisors (see below), whose sum is σ = 104205384. Its totient is φ = 17367560.

The previous prime is 52102679. The next prime is 52102727. The reversal of 52102686 is 68620125.

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

52102686 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4341885 + ... + 4341896.

It is an arithmetic number, because the mean of its divisors is an integer number (13025673).

Almost surely, 252102686 is an apocalyptic number.

52102686 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

52102686 is a wasteful number, since it uses less digits than its factorization.

52102686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8683786.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 52102686 is about 7218.2190324207. The cubic root of 52102686 is about 373.4966442892.

The spelling of 52102686 in words is "fifty-two million, one hundred two thousand, six hundred eighty-six".

Divisors: 1 2 3 6 8683781 17367562 26051343 52102686