Search a number
-
+
213087008 = 256658969
BaseRepresentation
bin11001011001101…
…11001100100000
3112211221221102102
430230313030200
5414022241013
633051105532
75165131631
oct1454671440
9484857372
10213087008
11aa311472
125b4422a8
13351b9cb4
142042b888
1513a91d58
hexcb37320

213087008 has 12 divisors (see below), whose sum is σ = 419515110. Its totient is φ = 106543488.

The previous prime is 213086941. The next prime is 213087013. The reversal of 213087008 is 800780312.

It can be written as a sum of positive squares in only one way, i.e., 131148304 + 81938704 = 11452^2 + 9052^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3329453 + ... + 3329516.

Almost surely, 2213087008 is an apocalyptic number.

It is an amenable number.

213087008 is a deficient number, since it is larger than the sum of its proper divisors (206428102).

213087008 is an equidigital number, since it uses as much as digits as its factorization.

213087008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6658979 (or 6658971 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 213087008 is about 14597.5000599418. The cubic root of 213087008 is about 597.2905685707.

The spelling of 213087008 in words is "two hundred thirteen million, eighty-seven thousand, eight".

Divisors: 1 2 4 8 16 32 6658969 13317938 26635876 53271752 106543504 213087008