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2156000 = 25537211
BaseRepresentation
bin1000001110010111100000
311001112110212
420032113200
51022443000
6114113252
724216500
oct10162740
94045425
102156000
111242920
1287b828
135a6452
14401a00
152c8c35
hex20e5e0

2156000 has 144 divisors (see below), whose sum is σ = 6722352. Its totient is φ = 672000.

The previous prime is 2155999. The next prime is 2156009. The reversal of 2156000 is 6512.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195995 + ... + 196005.

It is an arithmetic number, because the mean of its divisors is an integer number (46683).

22156000 is an apocalyptic number.

2156000 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 2156000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3361176).

2156000 is an abundant number, since it is smaller than the sum of its proper divisors (4566352).

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

2156000 is a wasteful number, since it uses less digits than its factorization.

2156000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50 (or 25 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 2156000 is about 1468.3323874382. The cubic root of 2156000 is about 129.1862382183.

The spelling of 2156000 in words is "two million, one hundred fifty-six thousand".

Divisors: 1 2 4 5 7 8 10 11 14 16 20 22 25 28 32 35 40 44 49 50 55 56 70 77 80 88 98 100 110 112 125 140 154 160 175 176 196 200 220 224 245 250 275 280 308 350 352 385 392 400 440 490 500 539 550 560 616 700 770 784 800 875 880 980 1000 1078 1100 1120 1225 1232 1375 1400 1540 1568 1750 1760 1925 1960 2000 2156 2200 2450 2464 2695 2750 2800 3080 3500 3850 3920 4000 4312 4400 4900 5390 5500 5600 6125 6160 7000 7700 7840 8624 8800 9625 9800 10780 11000 12250 12320 13475 14000 15400 17248 19250 19600 21560 22000 24500 26950 28000 30800 38500 39200 43120 44000 49000 53900 61600 67375 77000 86240 98000 107800 134750 154000 196000 215600 269500 308000 431200 539000 1078000 2156000