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3440000 = 275443
BaseRepresentation
bin1101000111110110000000
320110202210102
431013312000
51340040000
6201421532
741145104
oct15076600
96422712
103440000
111a3a583
12119a8a8
13935a05
14657904
1547e3d5
hex347d80

3440000 has 80 divisors (see below), whose sum is σ = 8762820. Its totient is φ = 1344000.

The previous prime is 3439999. The next prime is 3440011. The reversal of 3440000 is 443.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 79979 + ... + 80021.

Almost surely, 23440000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4381410).

3440000 is an abundant number, since it is smaller than the sum of its proper divisors (5322820).

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

3440000 is an frugal number, since it uses more digits than its factorization.

3440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 3440000 is about 1854.7236990991. The cubic root of 3440000 is about 150.9568462858.

Adding to 3440000 its reverse (443), we get a palindrome (3440443).

The spelling of 3440000 in words is "three million, four hundred forty thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 43 50 64 80 86 100 125 128 160 172 200 215 250 320 344 400 430 500 625 640 688 800 860 1000 1075 1250 1376 1600 1720 2000 2150 2500 2752 3200 3440 4000 4300 5000 5375 5504 6880 8000 8600 10000 10750 13760 16000 17200 20000 21500 26875 27520 34400 40000 43000 53750 68800 80000 86000 107500 137600 172000 215000 344000 430000 688000 860000 1720000 3440000