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226981005 = 3515132067
BaseRepresentation
bin11011000011101…
…11010010001101
3120211002211101220
431201313102031
5431101343010
634304553553
75424210126
oct1541672215
9524084356
10226981005
11107141209
12640228b9
13380430b4
142220704d
1514dd8970
hexd87748d

226981005 has 8 divisors (see below), whose sum is σ = 363169632. Its totient is φ = 121056528.

The previous prime is 226981003. The next prime is 226981081. The reversal of 226981005 is 500189622.

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

It is not a de Polignac number, because 226981005 - 21 = 226981003 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226981003) 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, 7566019 + ... + 7566048.

It is an arithmetic number, because the mean of its divisors is an integer number (45396204).

Almost surely, 2226981005 is an apocalyptic number.

It is an amenable number.

226981005 is a deficient number, since it is larger than the sum of its proper divisors (136188627).

226981005 is a wasteful number, since it uses less digits than its factorization.

226981005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15132075.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 226981005 is about 15065.8887889165. Note that the first 3 decimals coincide. The cubic root of 226981005 is about 610.0000044791. Note that the first 5 decimals are identical.

The spelling of 226981005 in words is "two hundred twenty-six million, nine hundred eighty-one thousand, five".

Divisors: 1 3 5 15 15132067 45396201 75660335 226981005