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19600 = 245272
BaseRepresentation
bin100110010010000
3222212221
410302100
51111400
6230424
7111100
oct46220
928787
1019600
11137a9
12b414
138bc9
147200
155c1a
hex4c90

19600 has 45 divisors (see below), whose sum is σ = 54777. Its totient is φ = 6720.

The previous prime is 19597. The next prime is 19603. The reversal of 19600 is 691.

Multipling 19600 by its sum of digits (16), we get a square (313600 = 5602).

19600 divided by its sum of digits (16) gives a triangular number (1225 = T49).

19600 = T1 + T2 + ... + T48.

The square root of 19600 is 140.

It is a perfect power (a square), and thus also a powerful number.

19600 is a nontrivial binomial coefficient, being equal to C(50, 3).

It is an interprime number because it is at equal distance from previous prime (19597) and next prime (19603).

It can be written as a sum of positive squares in only one way, i.e., 7056 + 12544 = 84^2 + 112^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 7 and base 14.

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (19603) by changing a digit.

It is the 48-th tetrahedral number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2797 + ... + 2803.

219600 is an apocalyptic number.

19600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19600 is the 140-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19600

19600 is an abundant number, since it is smaller than the sum of its proper divisors (35177).

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

19600 is a wasteful number, since it uses less digits than its factorization.

19600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32 (or 14 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

The cubic root of 19600 is about 26.9619949978.

The spelling of 19600 in words is "nineteen thousand, six hundred".

Divisors: 1 2 4 5 7 8 10 14 16 20 25 28 35 40 49 50 56 70 80 98 100 112 140 175 196 200 245 280 350 392 400 490 560 700 784 980 1225 1400 1960 2450 2800 3920 4900 9800 19600