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226956861 = 32199312653
BaseRepresentation
bin11011000011100…
…01011000111101
3120211001121021200
431201301120331
5431100104421
634304250113
75424046545
oct1541613075
9524047250
10226956861
1110712505a
1264010939
1338035101
14221dc325
1514dd1726
hexd87163d

226956861 has 12 divisors (see below), whose sum is σ = 328016988. Its totient is φ = 151216704.

The previous prime is 226956839. The next prime is 226956869. The reversal of 226956861 is 168659622.

226956861 is a `hidden beast` number, since 2 + 26 + 9 + 568 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 60933636 + 166023225 = 7806^2 + 12885^2 .

It is not a de Polignac number, because 226956861 - 219 = 226432573 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226956869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11611 + ... + 24263.

It is an arithmetic number, because the mean of its divisors is an integer number (27334749).

Almost surely, 2226956861 is an apocalyptic number.

It is an amenable number.

226956861 is a deficient number, since it is larger than the sum of its proper divisors (101060127).

226956861 is a wasteful number, since it uses less digits than its factorization.

226956861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14652 (or 14649 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 226956861 is about 15065.0874872999. The cubic root of 226956861 is about 609.9783751180.

The spelling of 226956861 in words is "two hundred twenty-six million, nine hundred fifty-six thousand, eight hundred sixty-one".

Divisors: 1 3 9 1993 5979 12653 17937 37959 113877 25217429 75652287 226956861