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68727830 = 256872783
BaseRepresentation
bin1000001100010…
…11010000010110
311210022201212012
410012023100112
5120043242310
610453024222
71463114453
oct406132026
9153281765
1068727830
1135882266
121b025072
1311314772
1491b082a
156078c05
hex418b416

68727830 has 8 divisors (see below), whose sum is σ = 123710112. Its totient is φ = 27491128.

The previous prime is 68727811. The next prime is 68727851. The reversal of 68727830 is 3872786.

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

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, 3436382 + ... + 3436401.

It is an arithmetic number, because the mean of its divisors is an integer number (15463764).

Almost surely, 268727830 is an apocalyptic number.

68727830 is a deficient number, since it is larger than the sum of its proper divisors (54982282).

68727830 is a wasteful number, since it uses less digits than its factorization.

68727830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6872790.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 68727830 is about 8290.2249667907. The cubic root of 68727830 is about 409.6165957720.

The spelling of 68727830 in words is "sixty-eight million, seven hundred twenty-seven thousand, eight hundred thirty".

Divisors: 1 2 5 10 6872783 13745566 34363915 68727830