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252020008 = 23178917609
BaseRepresentation
bin11110000010110…
…00010100101000
3122120012221110101
433001120110220
51004004120013
641001355144
76150064132
oct1701302450
9576187411
10252020008
1111a2933a9
1270498ab4
134029bc86
1425684052
15171d28dd
hexf058528

252020008 has 16 divisors (see below), whose sum is σ = 472828500. Its totient is φ = 125932416.

The previous prime is 252019997. The next prime is 252020029. The reversal of 252020008 is 800020252.

It can be written as a sum of positive squares in 2 ways, for example, as 213802884 + 38217124 = 14622^2 + 6182^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5508 + ... + 23116.

Almost surely, 2252020008 is an apocalyptic number.

It is an amenable number.

252020008 is a deficient number, since it is larger than the sum of its proper divisors (220808492).

252020008 is a wasteful number, since it uses less digits than its factorization.

252020008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19404 (or 19400 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 252020008 is about 15875.1380466439. The cubic root of 252020008 is about 631.6526759532.

The spelling of 252020008 in words is "two hundred fifty-two million, twenty thousand, eight".

Divisors: 1 2 4 8 1789 3578 7156 14312 17609 35218 70436 140872 31502501 63005002 126010004 252020008