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468907081 = 2691743149
BaseRepresentation
bin11011111100101…
…111010001001001
31012200022221120221
4123330233101021
51430020011311
6114310150041
714422434016
oct3374572111
91180287527
10468907081
1122075a915
12111052321
13761b9816
14463c070d
152b275671
hex1bf2f449

468907081 has 4 divisors (see below), whose sum is σ = 470650500. Its totient is φ = 467163664.

The previous prime is 468907079. The next prime is 468907097. The reversal of 468907081 is 180709864.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 253287225 + 215619856 = 15915^2 + 14684^2 .

It is a cyclic number.

It is not a de Polignac number, because 468907081 - 21 = 468907079 is a prime.

It is a super-2 number, since 2×4689070812 = 439747701223881122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (468907001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 871306 + ... + 871843.

It is an arithmetic number, because the mean of its divisors is an integer number (117662625).

Almost surely, 2468907081 is an apocalyptic number.

It is an amenable number.

468907081 is a deficient number, since it is larger than the sum of its proper divisors (1743419).

468907081 is a wasteful number, since it uses less digits than its factorization.

468907081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743418.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 468907081 is about 21654.2624210570. The cubic root of 468907081 is about 776.8948878536.

The spelling of 468907081 in words is "four hundred sixty-eight million, nine hundred seven thousand, eighty-one".

Divisors: 1 269 1743149 468907081