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206007040 = 285227709
BaseRepresentation
bin11000100011101…
…10101100000000
3112100122020112101
430101312230000
5410214211130
632235240144
75051013421
oct1421665400
9470566471
10206007040
11a6316158
1258ba9054
13338ab575
141d507648
15131441ca
hexc476b00

206007040 has 72 divisors (see below), whose sum is σ = 496324080. Its totient is φ = 81924096.

The previous prime is 206006963. The next prime is 206007073. The reversal of 206007040 is 40700602.

It is a junction number, because it is equal to n+sod(n) for n = 206006999 and 206007017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290206 + ... + 290914.

It is an arithmetic number, because the mean of its divisors is an integer number (6893390).

Almost surely, 2206007040 is an apocalyptic number.

206007040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206007040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248162040).

206007040 is an abundant number, since it is smaller than the sum of its proper divisors (290317040).

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

206007040 is an equidigital number, since it uses as much as digits as its factorization.

206007040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 206007040 is about 14352.9453423331. The cubic root of 206007040 is about 590.6007860887.

Adding to 206007040 its reverse (40700602), we get a palindrome (246707642).

The spelling of 206007040 in words is "two hundred six million, seven thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 227 256 320 454 640 709 908 1135 1280 1418 1816 2270 2836 3545 3632 4540 5672 7090 7264 9080 11344 14180 14528 18160 22688 28360 29056 36320 45376 56720 58112 72640 90752 113440 145280 160943 181504 226880 290560 321886 453760 643772 804715 907520 1287544 1609430 2575088 3218860 5150176 6437720 10300352 12875440 20600704 25750880 41201408 51501760 103003520 206007040