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253885386 = 23731374231
BaseRepresentation
bin11110010000111…
…11101111001010
3122200201201021110
433020133233022
51004443313021
641105351150
76201663426
oct1710375712
9580651243
10253885386
11120347937
12710384b6
13407a3051
1425a0bb86
1517450476
hexf21fbca

253885386 has 32 divisors (see below), whose sum is σ = 518606208. Its totient is φ = 82840320.

The previous prime is 253885369. The next prime is 253885397. The reversal of 253885386 is 683588352.

253885386 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 57891 + ... + 62121.

It is an arithmetic number, because the mean of its divisors is an integer number (16206444).

Almost surely, 2253885386 is an apocalyptic number.

253885386 is an abundant number, since it is smaller than the sum of its proper divisors (264720822).

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

253885386 is a wasteful number, since it uses less digits than its factorization.

253885386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446.

The product of its digits is 1382400, while the sum is 48.

The square root of 253885386 is about 15933.7812838008. The cubic root of 253885386 is about 633.2072824548.

The spelling of 253885386 in words is "two hundred fifty-three million, eight hundred eighty-five thousand, three hundred eighty-six".

Divisors: 1 2 3 6 73 137 146 219 274 411 438 822 4231 8462 10001 12693 20002 25386 30003 60006 308863 579647 617726 926589 1159294 1738941 1853178 3477882 42314231 84628462 126942693 253885386