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2972900800 = 26521999337
BaseRepresentation
bin1011000100110010…
…1101110111000000
321200012001000020001
42301030231313000
522042030311200
61210555325344
7133446145162
oct26114556700
97605030201
102972900800
111296141411
126ab750854
13384bb69cc
14202b90932
15125ede76a
hexb132ddc0

2972900800 has 84 divisors (see below), whose sum is σ = 7352741200. Its totient is φ = 1183057920.

The previous prime is 2972900779. The next prime is 2972900803. The reversal of 2972900800 is 80092792.

It is a self number, because there is not a number n which added to its sum of digits gives 2972900800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2972900803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313732 + ... + 323068.

Almost surely, 22972900800 is an apocalyptic number.

2972900800 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 2972900800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3676370600).

2972900800 is an abundant number, since it is smaller than the sum of its proper divisors (4379840400).

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

2972900800 is a wasteful number, since it uses less digits than its factorization.

2972900800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9558 (or 9543 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 2972900800 is about 54524.3138425418. The cubic root of 2972900800 is about 1437.8937829821.

The spelling of 2972900800 in words is "two billion, nine hundred seventy-two million, nine hundred thousand, eight hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 160 199 200 320 398 400 796 800 995 1592 1600 1990 3184 3980 4975 6368 7960 9337 9950 12736 15920 18674 19900 31840 37348 39800 46685 63680 74696 79600 93370 149392 159200 186740 233425 298784 318400 373480 466850 597568 746960 933700 1493920 1858063 1867400 2987840 3716126 3734800 7432252 7469600 9290315 14864504 14939200 18580630 29729008 37161260 46451575 59458016 74322520 92903150 118916032 148645040 185806300 297290080 371612600 594580160 743225200 1486450400 2972900800