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253152318 = 23611136121
BaseRepresentation
bin11110001011011…
…00110000111110
3122122100110200210
433011230300332
51004301333233
641041533250
76162521256
oct1705546076
9578313623
10253152318
1111a9970a1
1270944226
13405a7493
142589a966
1517358163
hexf16cc3e

253152318 has 32 divisors (see below), whose sum is σ = 519243552. Its totient is φ = 82252800.

The previous prime is 253152311. The next prime is 253152353. The reversal of 253152318 is 813251352.

253152318 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2531523182 = 128172192217546248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253152311) 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, 38298 + ... + 44418.

It is an arithmetic number, because the mean of its divisors is an integer number (16226361).

Almost surely, 2253152318 is an apocalyptic number.

253152318 is an abundant number, since it is smaller than the sum of its proper divisors (266091234).

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

253152318 is a wasteful number, since it uses less digits than its factorization.

253152318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6300.

The product of its digits is 7200, while the sum is 30.

The square root of 253152318 is about 15910.7610754483. The cubic root of 253152318 is about 632.5972545958.

The spelling of 253152318 in words is "two hundred fifty-three million, one hundred fifty-two thousand, three hundred eighteen".

Divisors: 1 2 3 6 61 113 122 183 226 339 366 678 6121 6893 12242 13786 18363 20679 36726 41358 373381 691673 746762 1120143 1383346 2075019 2240286 4150038 42192053 84384106 126576159 253152318