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253230538 = 211172392833
BaseRepresentation
bin11110001011111…
…11110111001010
3122122111102222211
433011333313022
51004311334123
641043335334
76163265311
oct1705776712
9578442884
10253230538
1111aa3a940
127098154a
1340603c72
14258bb278
151737140d
hexf17fdca

253230538 has 32 divisors (see below), whose sum is σ = 440743680. Its totient is φ = 107842560.

The previous prime is 253230511. The next prime is 253230563. The reversal of 253230538 is 835032352.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87970 + ... + 90802.

It is an arithmetic number, because the mean of its divisors is an integer number (13773240).

Almost surely, 2253230538 is an apocalyptic number.

253230538 is a deficient number, since it is larger than the sum of its proper divisors (187513142).

253230538 is a wasteful number, since it uses less digits than its factorization.

253230538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3102.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 253230538 is about 15913.2189704032. The cubic root of 253230538 is about 632.6624020166.

The spelling of 253230538 in words is "two hundred fifty-three million, two hundred thirty thousand, five hundred thirty-eight".

Divisors: 1 2 11 17 22 34 187 239 374 478 2629 2833 4063 5258 5666 8126 31163 44693 48161 62326 89386 96322 529771 677087 1059542 1354174 7447957 11510479 14895914 23020958 126615269 253230538