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68245086 = 23713124991
BaseRepresentation
bin1000001000101…
…01011001011110
311202102012122210
410010111121132
5114432320321
610434421250
71456034160
oct404253136
9152365583
1068245086
11355825a8
121aa31826
13111a5b10
1490c6930
155ed0b76
hex411565e

68245086 has 32 divisors (see below), whose sum is σ = 167989248. Its totient is φ = 17998560.

The previous prime is 68245069. The next prime is 68245087. The reversal of 68245086 is 68054286.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68245087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61950 + ... + 63041.

It is an arithmetic number, because the mean of its divisors is an integer number (5249664).

Almost surely, 268245086 is an apocalyptic number.

68245086 is an abundant number, since it is smaller than the sum of its proper divisors (99744162).

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

68245086 is a wasteful number, since it uses less digits than its factorization.

68245086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125016.

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 68245086 is about 8261.0584067660. The cubic root of 68245086 is about 408.6552930803.

The spelling of 68245086 in words is "sixty-eight million, two hundred forty-five thousand, eighty-six".

Divisors: 1 2 3 6 7 13 14 21 26 39 42 78 91 182 273 546 124991 249982 374973 749946 874937 1624883 1749874 2624811 3249766 4874649 5249622 9749298 11374181 22748362 34122543 68245086