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30860000 = 25541543
BaseRepresentation
bin111010110111…
…0001011100000
32011001211221222
41311232023200
530400010000
63021234212
7523206563
oct165561340
964054858
1030860000
1116468636
12a402968
136516572
1441544da
152a98a85
hex1d6e2e0

30860000 has 60 divisors (see below), whose sum is σ = 75969432. Its totient is φ = 12336000.

The previous prime is 30859993. The next prime is 30860023. The reversal of 30860000 is 6803.

It is a happy number.

It is a congruent number.

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 9 ways as a sum of consecutive naturals, for example, 19229 + ... + 20771.

Almost surely, 230860000 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 30860000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37984716).

30860000 is an abundant number, since it is smaller than the sum of its proper divisors (45109432).

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

30860000 is an equidigital number, since it uses as much as digits as its factorization.

30860000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 30860000 is about 5555.1777649325. The cubic root of 30860000 is about 313.6644555490.

Adding to 30860000 its reverse (6803), we get a palindrome (30866803).

The spelling of 30860000 in words is "thirty million, eight hundred sixty thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 125 160 200 250 400 500 625 800 1000 1250 1543 2000 2500 3086 4000 5000 6172 7715 10000 12344 15430 20000 24688 30860 38575 49376 61720 77150 123440 154300 192875 246880 308600 385750 617200 771500 964375 1234400 1543000 1928750 3086000 3857500 6172000 7715000 15430000 30860000