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487223906 = 21318739381
BaseRepresentation
bin11101000010100…
…111001001100010
31020221210112112212
4131002213021202
51444212131111
6120202522122
715034222601
oct3502471142
91227715485
10487223906
11230030594
12117206342
1379c30a90
14489cba38
152cb9298b
hex1d0a7262

487223906 has 8 divisors (see below), whose sum is σ = 787054044. Its totient is φ = 224872560.

The previous prime is 487223873. The next prime is 487223911. The reversal of 487223906 is 609322784.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 465049225 + 22174681 = 21565^2 + 4709^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 9369665 + ... + 9369716.

Almost surely, 2487223906 is an apocalyptic number.

487223906 is a deficient number, since it is larger than the sum of its proper divisors (299830138).

487223906 is a wasteful number, since it uses less digits than its factorization.

487223906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18739396.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 487223906 is about 22073.1489824175. The cubic root of 487223906 is about 786.8818528993.

The spelling of 487223906 in words is "four hundred eighty-seven million, two hundred twenty-three thousand, nine hundred six".

Divisors: 1 2 13 26 18739381 37478762 243611953 487223906