Search a number
-
+
256974935587200 = 273252172331853863
BaseRepresentation
bin111010011011011110100011…
…110000000111100110000000
31020200212120020002122012112100
4322123132203300013212000
5232140234132002242300
62310312353343030400
7105061553314231305
oct7233364360074600
91220776202565470
10256974935587200
11749755048a8436
12249a3569b9b400
13b05082b64058c
1447659207110ac
151ea9793c55700
hexe9b7a3c07980

256974935587200 has 2304 divisors, whose sum is σ = 1048215469916160. Its totient is φ = 59562373939200.

The previous prime is 256974935587193. The next prime is 256974935587259. The reversal of 256974935587200 is 2785539479652.

256974935587200 is a `hidden beast` number, since 2 + 5 + 6 + 9 + 7 + 4 + 9 + 35 + 587 + 2 + 0 + 0 = 666.

It is a super-2 number, since 2×2569749355872002 (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 297769333969 + ... + 297769334831.

It is an arithmetic number, because the mean of its divisors is an integer number (454954631040).

Almost surely, 2256974935587200 is an apocalyptic number.

256974935587200 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 256974935587200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524107734958080).

256974935587200 is an abundant number, since it is smaller than the sum of its proper divisors (791240534328960).

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

256974935587200 is a wasteful number, since it uses less digits than its factorization.

256974935587200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817 (or 1797 counting only the distinct ones).

The product of its (nonzero) digits is 1143072000, while the sum is 72.

The spelling of 256974935587200 in words is "two hundred fifty-six trillion, nine hundred seventy-four billion, nine hundred thirty-five million, five hundred eighty-seven thousand, two hundred".