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68520876 = 22343913007
BaseRepresentation
bin1000001010110…
…00101110101100
311202221012222020
410011120232230
5120020132001
610444350140
71461263214
oct405305654
9152835866
1068520876
1135750826
121ab45350
13112714c8
149159244
156037736
hex4158bac

68520876 has 24 divisors (see below), whose sum is σ = 160258560. Its totient is φ = 22786512.

The previous prime is 68520871. The next prime is 68520883. The reversal of 68520876 is 67802586.

It is a super-2 number, since 2×685208762 = 9390220895614752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68520871) 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, 1236 + ... + 11771.

It is an arithmetic number, because the mean of its divisors is an integer number (6677440).

Almost surely, 268520876 is an apocalyptic number.

It is an amenable number.

68520876 is an abundant number, since it is smaller than the sum of its proper divisors (91737684).

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

68520876 is a wasteful number, since it uses less digits than its factorization.

68520876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13453 (or 13451 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 68520876 is about 8277.7337478322. The cubic root of 68520876 is about 409.2050350589.

It can be divided in two parts, 68520 and 876, that added together give a palindrome (69396).

The spelling of 68520876 in words is "sixty-eight million, five hundred twenty thousand, eight hundred seventy-six".

Divisors: 1 2 3 4 6 12 439 878 1317 1756 2634 5268 13007 26014 39021 52028 78042 156084 5710073 11420146 17130219 22840292 34260438 68520876