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68457486 = 23311931907
BaseRepresentation
bin1000001010010…
…01010000001110
311202211000000110
410011021100032
5120011114421
610443140450
71460610336
oct405112016
9152730013
1068457486
1135708139
121ab14726
131124b6b6
1491400c6
156023a76
hex414940e

68457486 has 32 divisors (see below), whose sum is σ = 142138368. Its totient is φ = 21957120.

The previous prime is 68457481. The next prime is 68457509. The reversal of 68457486 is 68475486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68457481) 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, 34945 + ... + 36851.

It is an arithmetic number, because the mean of its divisors is an integer number (4441824).

Almost surely, 268457486 is an apocalyptic number.

68457486 is an abundant number, since it is smaller than the sum of its proper divisors (73680882).

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

68457486 is a wasteful number, since it uses less digits than its factorization.

68457486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136.

The product of its digits is 1290240, while the sum is 48.

The square root of 68457486 is about 8273.9039153232. The cubic root of 68457486 is about 409.0788082706.

The spelling of 68457486 in words is "sixty-eight million, four hundred fifty-seven thousand, four hundred eighty-six".

Divisors: 1 2 3 6 31 62 93 186 193 386 579 1158 1907 3814 5721 5983 11442 11966 17949 35898 59117 118234 177351 354702 368051 736102 1104153 2208306 11409581 22819162 34228743 68457486