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252806105 = 557918731
BaseRepresentation
bin11110001000110…
…00001111011001
3122121200212210002
433010120033121
51004204243410
641030302345
76156550016
oct1704301731
9577625702
10252806105
1111a77aa72
12707b79b5
13404b5a16
142580a70d
15172da7a5
hexf1183d9

252806105 has 8 divisors (see below), whose sum is σ = 303454464. Its totient is φ = 202186800.

The previous prime is 252806101. The next prime is 252806107. The reversal of 252806105 is 501608252.

252806105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 252806105 - 22 = 252806101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252806101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24590 + ... + 33320.

It is an arithmetic number, because the mean of its divisors is an integer number (37931808).

Almost surely, 2252806105 is an apocalyptic number.

It is an amenable number.

252806105 is a deficient number, since it is larger than the sum of its proper divisors (50648359).

252806105 is an equidigital number, since it uses as much as digits as its factorization.

252806105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14527.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 252806105 is about 15899.8775152515. The cubic root of 252806105 is about 632.3087414555.

The spelling of 252806105 in words is "two hundred fifty-two million, eight hundred six thousand, one hundred five".

Divisors: 1 5 5791 8731 28955 43655 50561221 252806105