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252017842 = 2139906539
BaseRepresentation
bin11110000010101…
…11110010110010
3122120012211111011
433001113302302
51004004032332
641001341134
76150054616
oct1701276262
9576184434
10252017842
1111a29180a
12704977aa
134029acab
1425683346
15171d1e47
hexf057cb2

252017842 has 8 divisors (see below), whose sum is σ = 380746800. Its totient is φ = 125102244.

The previous prime is 252017839. The next prime is 252017867. The reversal of 252017842 is 248710252.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452992 + ... + 453547.

It is an arithmetic number, because the mean of its divisors is an integer number (47593350).

Almost surely, 2252017842 is an apocalyptic number.

252017842 is a deficient number, since it is larger than the sum of its proper divisors (128728958).

252017842 is a wasteful number, since it uses less digits than its factorization.

252017842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906680.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 252017842 is about 15875.0698266181. The cubic root of 252017842 is about 631.6508663567.

The spelling of 252017842 in words is "two hundred fifty-two million, seventeen thousand, eight hundred forty-two".

Divisors: 1 2 139 278 906539 1813078 126008921 252017842