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68520676 = 22717413511
BaseRepresentation
bin1000001010110…
…00101011100100
311202221012200211
410011120223210
5120020130201
610444345204
71461262510
oct405305344
9152835624
1068520676
1135750664
121ab45204
13112713a3
149159140
156037651
hex4158ae4

68520676 has 48 divisors (see below), whose sum is σ = 148684032. Its totient is φ = 26956800.

The previous prime is 68520671. The next prime is 68520701. The reversal of 68520676 is 67602586.

It is not an unprimeable number, because it can be changed into a prime (68520671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17761 + ... + 21271.

It is an arithmetic number, because the mean of its divisors is an integer number (3097584).

Almost surely, 268520676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68520676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74342016).

68520676 is an abundant number, since it is smaller than the sum of its proper divisors (80163356).

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

68520676 is a wasteful number, since it uses less digits than its factorization.

68520676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580 (or 3578 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 68520676 is about 8277.7216672222. The cubic root of 68520676 is about 409.2046369268.

It can be divided in two parts, 68520 and 676, that added together give a palindrome (69196).

The spelling of 68520676 in words is "sixty-eight million, five hundred twenty thousand, six hundred seventy-six".

Divisors: 1 2 4 7 14 17 28 34 41 68 82 119 164 238 287 476 574 697 1148 1394 2788 3511 4879 7022 9758 14044 19516 24577 49154 59687 98308 119374 143951 238748 287902 417809 575804 835618 1007657 1671236 2015314 2447167 4030628 4894334 9788668 17130169 34260338 68520676