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2881200 = 2435274
BaseRepresentation
bin1010111111011010110000
312102101021010
422333122300
51214144300
6141430520
733330000
oct12773260
95371233
102881200
111698763
12b6b440
1379b56a
14550000
153bda50
hex2bf6b0

2881200 has 150 divisors (see below), whose sum is σ = 10767044. Its totient is φ = 658560.

The previous prime is 2881183. The next prime is 2881243. The reversal of 2881200 is 21882.

2881200 is a nontrivial binomial coefficient, being equal to C(2401, 2).

It is a tau number, because it is divible by the number of its divisors (150).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 7 and base 14.

It is a zygodrome in base 7 and base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 411597 + ... + 411603.

22881200 is an apocalyptic number.

2881200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

2881200 is the 2400-th triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2881200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5383522).

2881200 is an abundant number, since it is smaller than the sum of its proper divisors (7885844).

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

2881200 is an equidigital number, since it uses as much as digits as its factorization.

2881200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 2881200 is about 1697.4097914175. The cubic root of 2881200 is about 142.2954899541.

It can be divided in two parts, 2881 and 200, that added together give a triangular number (3081 = T78).

The spelling of 2881200 in words is "two million, eight hundred eighty-one thousand, two hundred".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 25 28 30 35 40 42 48 49 50 56 60 70 75 80 84 98 100 105 112 120 140 147 150 168 175 196 200 210 240 245 280 294 300 336 343 350 392 400 420 490 525 560 588 600 686 700 735 784 840 980 1029 1050 1176 1200 1225 1372 1400 1470 1680 1715 1960 2058 2100 2352 2401 2450 2744 2800 2940 3430 3675 3920 4116 4200 4802 4900 5145 5488 5880 6860 7203 7350 8232 8400 8575 9604 9800 10290 11760 12005 13720 14406 14700 16464 17150 19208 19600 20580 24010 25725 27440 28812 29400 34300 36015 38416 41160 48020 51450 57624 58800 60025 68600 72030 82320 96040 102900 115248 120050 137200 144060 180075 192080 205800 240100 288120 360150 411600 480200 576240 720300 960400 1440600 2881200