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230008897 = 281821997
BaseRepresentation
bin11011011010110…
…10100001000001
3121000210122220001
431231122201001
5432340241042
634453520001
75462020606
oct1555324101
9530718801
10230008897
1110891a0a8
1265043001
1338863351
14227946ad
15152d5bb7
hexdb5a841

230008897 has 8 divisors (see below), whose sum is σ = 231340392. Its totient is φ = 228681600.

The previous prime is 230008879. The next prime is 230008907. The reversal of 230008897 is 798800032.

It can be written as a sum of positive squares in 4 ways, for example, as 66194496 + 163814401 = 8136^2 + 12799^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 230008897 - 27 = 230008769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230008847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230203 + ... + 231199.

It is an arithmetic number, because the mean of its divisors is an integer number (28917549).

Almost surely, 2230008897 is an apocalyptic number.

It is an amenable number.

230008897 is a deficient number, since it is larger than the sum of its proper divisors (1331495).

230008897 is an equidigital number, since it uses as much as digits as its factorization.

230008897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 230008897 is about 15166.0442106701. The cubic root of 230008897 is about 612.7004676033.

The spelling of 230008897 in words is "two hundred thirty million, eight thousand, eight hundred ninety-seven".

Divisors: 1 281 821 997 230701 280157 818537 230008897