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206976312 = 233213720983
BaseRepresentation
bin11000101011000…
…11010100111000
3112102110111010100
430111203110320
5410441220222
632312115400
75062161324
oct1425432470
9472414110
10206976312
11a6918404
1259395b60
1333b5a7ba
141d6ba984
15132864ac
hexc563538

206976312 has 48 divisors (see below), whose sum is σ = 564679440. Its totient is φ = 68485248.

The previous prime is 206976299. The next prime is 206976313. The reversal of 206976312 is 213679602.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206976313) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 628 + ... + 20355.

It is an arithmetic number, because the mean of its divisors is an integer number (11764155).

Almost surely, 2206976312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206976312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282339720).

206976312 is an abundant number, since it is smaller than the sum of its proper divisors (357703128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206976312 is a wasteful number, since it uses less digits than its factorization.

206976312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21132 (or 21125 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 206976312 is about 14386.6713314790. The cubic root of 206976312 is about 591.5256045472.

The spelling of 206976312 in words is "two hundred six million, nine hundred seventy-six thousand, three hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 137 274 411 548 822 1096 1233 1644 2466 3288 4932 9864 20983 41966 62949 83932 125898 167864 188847 251796 377694 503592 755388 1510776 2874671 5749342 8624013 11498684 17248026 22997368 25872039 34496052 51744078 68992104 103488156 206976312