Search a number
-
+
255980000 = 255412799
BaseRepresentation
bin11110100000111…
…11000111100000
3122211200010112202
433100133013200
51011012330000
641222312332
76225536243
oct1720370740
9584603482
10255980000
11121548621
12718886a8
1341057573
1425dd525a
1517715dd5
hexf41f1e0

255980000 has 60 divisors (see below), whose sum is σ = 629798400. Its totient is φ = 102384000.

The previous prime is 255979991. The next prime is 255980003. The reversal of 255980000 is 89552.

255980000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255980003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13601 + ... + 26399.

It is an arithmetic number, because the mean of its divisors is an integer number (10496640).

Almost surely, 2255980000 is an apocalyptic number.

255980000 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 255980000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314899200).

255980000 is an abundant number, since it is smaller than the sum of its proper divisors (373818400).

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

255980000 is an equidigital number, since it uses as much as digits as its factorization.

255980000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12829 (or 12806 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 255980000 is about 15999.3749877925. The cubic root of 255980000 is about 634.9438849290.

The spelling of 255980000 in words is "two hundred fifty-five million, nine hundred eighty 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 2000 2500 4000 5000 10000 12799 20000 25598 51196 63995 102392 127990 204784 255980 319975 409568 511960 639950 1023920 1279900 1599875 2047840 2559800 3199750 5119600 6399500 7999375 10239200 12799000 15998750 25598000 31997500 51196000 63995000 127990000 255980000