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210072008 = 23193136057
BaseRepresentation
bin11001000010101…
…11000111001000
3112122021202121202
430201113013020
5412234301013
632502323332
75130403556
oct1441270710
9478252552
10210072008
11a8642233
125a429548
13346a2883
141dc84bd6
1513698858
hexc8571c8

210072008 has 16 divisors (see below), whose sum is σ = 395928780. Its totient is φ = 104491008.

The previous prime is 210072007. The next prime is 210072017. The reversal of 210072008 is 800270012.

It can be written as a sum of positive squares in 2 ways, for example, as 182844484 + 27227524 = 13522^2 + 5218^2 .

It is not an unprimeable number, because it can be changed into a prime (210072007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66485 + ... + 69572.

Almost surely, 2210072008 is an apocalyptic number.

It is an amenable number.

210072008 is a deficient number, since it is larger than the sum of its proper divisors (185856772).

210072008 is a wasteful number, since it uses less digits than its factorization.

210072008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136256 (or 136252 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 210072008 is about 14493.8610452840. The cubic root of 210072008 is about 594.4601255970.

The spelling of 210072008 in words is "two hundred ten million, seventy-two thousand, eight".

Divisors: 1 2 4 8 193 386 772 1544 136057 272114 544228 1088456 26259001 52518002 105036004 210072008