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206968968 = 23322874569
BaseRepresentation
bin11000101011000…
…01100010001000
3112102110010001100
430111201202020
5410441001333
632312021400
75062131033
oct1425414210
9472403040
10206968968
11a6912938
1259391860
1333b5735b
141d6b801a
1513284213
hexc561888

206968968 has 24 divisors (see below), whose sum is σ = 560541150. Its totient is φ = 68989632.

The previous prime is 206968961. The next prime is 206969017. The reversal of 206968968 is 869869602.

It can be written as a sum of positive squares in only one way, i.e., 126292644 + 80676324 = 11238^2 + 8982^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (206968961) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1437213 + ... + 1437356.

Almost surely, 2206968968 is an apocalyptic number.

It is an amenable number.

206968968 is an abundant number, since it is smaller than the sum of its proper divisors (353572182).

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

206968968 is a wasteful number, since it uses less digits than its factorization.

206968968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874581 (or 2874574 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 206968968 is about 14386.4160929677. The cubic root of 206968968 is about 591.5186082306.

It can be divided in two parts, 206968 and 968, that added together give a square (207936 = 4562).

The spelling of 206968968 in words is "two hundred six million, nine hundred sixty-eight thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 2874569 5749138 8623707 11498276 17247414 22996552 25871121 34494828 51742242 68989656 103484484 206968968