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200720149 = 7234013109
BaseRepresentation
bin10111111011010…
…11111100010101
3111222200122021121
423331223330111
5402341021044
631530043541
74655043640
oct1375537425
9458618247
10200720149
11a3335023
12572795b1
133277a026
141c92ca57
151294c984
hexbf6bf15

200720149 has 16 divisors (see below), whose sum is σ = 240042240. Its totient is φ = 164102400.

The previous prime is 200720147. The next prime is 200720167. The reversal of 200720149 is 941027002.

It is not a de Polignac number, because 200720149 - 21 = 200720147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200720147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63007 + ... + 66115.

It is an arithmetic number, because the mean of its divisors is an integer number (15002640).

Almost surely, 2200720149 is an apocalyptic number.

It is an amenable number.

200720149 is a deficient number, since it is larger than the sum of its proper divisors (39322091).

200720149 is a wasteful number, since it uses less digits than its factorization.

200720149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 200720149 is about 14167.5738572276. The cubic root of 200720149 is about 585.5046163415.

The spelling of 200720149 in words is "two hundred million, seven hundred twenty thousand, one hundred forty-nine".

Divisors: 1 7 23 161 401 2807 3109 9223 21763 64561 71507 500549 1246709 8726963 28674307 200720149