Search a number
-
+
206850942112720 = 2453860366980203
BaseRepresentation
bin101111000010000100111100…
…111011010001001111010000
31000010101202102210212210202211
4233002010330323101033100
5204103021212140101340
62011534002211121504
761366326114410053
oct5702047473211720
91003352383783684
10206850942112720
115a9aaaa02587a4
121b249121ba3294
138b55c63587ab9
1439118d3668a9a
1518daa037585ea
hexbc213ced13d0

206850942112720 has 40 divisors (see below), whose sum is σ = 480940905910176. Its totient is φ = 82738232243328.

The previous prime is 206850942112699. The next prime is 206850942112721. The reversal of 206850942112720 is 27211249058602.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206850942112721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30401862 + ... + 36578341.

Almost surely, 2206850942112720 is an apocalyptic number.

206850942112720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206850942112720 is an abundant number, since it is smaller than the sum of its proper divisors (274089963797456).

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

206850942112720 is a wasteful number, since it uses less digits than its factorization.

206850942112720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67018819 (or 67018813 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 206850942112720 in words is "two hundred six trillion, eight hundred fifty billion, nine hundred forty-two million, one hundred twelve thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 38603 77206 154412 193015 308824 386030 617648 772060 1544120 3088240 66980203 133960406 267920812 334901015 535841624 669802030 1071683248 1339604060 2679208120 5358416240 2585636776409 5171273552818 10342547105636 12928183882045 20685094211272 25856367764090 41370188422544 51712735528180 103425471056360 206850942112720