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252808089 = 3284329641
BaseRepresentation
bin11110001000110…
…00101110011001
3122121200222111120
433010120232121
51004204324324
641030315453
76156555552
oct1704305631
9577628446
10252808089
1111a781506
12707b8b89
13404b68b1
142580b329
15172db179
hexf118b99

252808089 has 8 divisors (see below), whose sum is σ = 337207392. Its totient is φ = 168473760.

The previous prime is 252808081. The next prime is 252808099. The reversal of 252808089 is 980808252.

252808089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 252808089 - 23 = 252808081 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 252808089.

It is not an unprimeable number, because it can be changed into a prime (252808081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6292 + ... + 23349.

It is an arithmetic number, because the mean of its divisors is an integer number (42150924).

Almost surely, 2252808089 is an apocalyptic number.

It is an amenable number.

252808089 is a deficient number, since it is larger than the sum of its proper divisors (84399303).

252808089 is a wasteful number, since it uses less digits than its factorization.

252808089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32487.

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 252808089 is about 15899.9399055468. The cubic root of 252808089 is about 632.3103955523.

The spelling of 252808089 in words is "two hundred fifty-two million, eight hundred eight thousand, eighty-nine".

Divisors: 1 3 2843 8529 29641 88923 84269363 252808089