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252706441 = 13192334391
BaseRepresentation
bin11110000111111…
…11111010001001
3122121111211001211
433003333322021
51004143101231
641024213121
76155653321
oct1703777211
9577454054
10252706441
1111a7120a9
127076a1a1
134047c550
14257c2281
15172baeb1
hexf0ffe89

252706441 has 16 divisors (see below), whose sum is σ = 287763840. Its totient is φ = 219991680.

The previous prime is 252706439. The next prime is 252706453. The reversal of 252706441 is 144607252.

It is a cyclic number.

It is not a de Polignac number, because 252706441 - 21 = 252706439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252706481) 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, 55356 + ... + 59746.

It is an arithmetic number, because the mean of its divisors is an integer number (17985240).

Almost surely, 2252706441 is an apocalyptic number.

It is an amenable number.

252706441 is a deficient number, since it is larger than the sum of its proper divisors (35057399).

252706441 is a wasteful number, since it uses less digits than its factorization.

252706441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4656.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 252706441 is about 15896.7430941058. The cubic root of 252706441 is about 632.2256386345.

The spelling of 252706441 in words is "two hundred fifty-two million, seven hundred six thousand, four hundred forty-one".

Divisors: 1 13 19 233 247 3029 4391 4427 57083 57551 83429 1023103 1084577 13300339 19438957 252706441