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227999999 = 1631398773
BaseRepresentation
bin11011001011100…
…00000011111111
3120220000121012102
431211300003333
5431331444444
634342455315
75435653013
oct1545600377
9526017172
10227999999
11107777857
126443453b
133830bb56
14223d0543
151503a84e
hexd9700ff

227999999 has 4 divisors (see below), whose sum is σ = 229398936. Its totient is φ = 226601064.

The previous prime is 227999977. The next prime is 228000037. The reversal of 227999999 is 999999722.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 227999999 - 224 = 211222783 is a prime.

It is a Duffinian number.

227999999 is a modest number, since divided by 99999 gives 2279 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227999909) 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, 699224 + ... + 699549.

It is an arithmetic number, because the mean of its divisors is an integer number (57349734).

Almost surely, 2227999999 is an apocalyptic number.

227999999 is a deficient number, since it is larger than the sum of its proper divisors (1398937).

227999999 is a wasteful number, since it uses less digits than its factorization.

227999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398936.

The product of its digits is 14880348, while the sum is 65.

The square root of 227999999 is about 15099.6688374282. The cubic root of 227999999 is about 610.9114735358.

The spelling of 227999999 in words is "two hundred twenty-seven million, nine hundred ninety-nine thousand, nine hundred ninety-nine".

Divisors: 1 163 1398773 227999999