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200920974 = 2333486829
BaseRepresentation
bin10111111100111…
…00111110001110
3112000001211202120
423332130332032
5402413432344
631534233410
74656541302
oct1376347616
9460054676
10200920974
11a34619a1
1257355866
133281a567
141c981d02
151298c219
hexbf9cf8e

200920974 has 8 divisors (see below), whose sum is σ = 401841960. Its totient is φ = 66973656.

The previous prime is 200920969. The next prime is 200920997. The reversal of 200920974 is 479029002.

It is a sphenic number, since it is the product of 3 distinct primes.

200920974 is an admirable number.

It is a super-3 number, since 3×2009209743 (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16743409 + ... + 16743420.

It is an arithmetic number, because the mean of its divisors is an integer number (50230245).

Almost surely, 2200920974 is an apocalyptic number.

200920974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

200920974 is a wasteful number, since it uses less digits than its factorization.

200920974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33486834.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 200920974 is about 14174.6595726317. The cubic root of 200920974 is about 585.6998214099.

Adding to 200920974 its reverse (479029002), we get a palindrome (679949976).

The spelling of 200920974 in words is "two hundred million, nine hundred twenty thousand, nine hundred seventy-four".

Divisors: 1 2 3 6 33486829 66973658 100460487 200920974