Search a number
-
+
2785314475680 = 25351119116323873
BaseRepresentation
bin101000100010000001101…
…011100000111010100000
3100212021101100120122210120
4220202001223200322200
5331113311001210210
65531320015400240
7405142455260262
oct50420153407240
910767340518716
102785314475680
11984277454820
1238b990223080
13172866b90589
1498b4a691b32
154c6bbdc8270
hex28881ae0ea0

2785314475680 has 384 divisors, whose sum is σ = 10084194247680. Its totient is φ = 639112642560.

The previous prime is 2785314475667. The next prime is 2785314475733. The reversal of 2785314475680 is 865744135872.

It is a super-2 number, since 2×27853144756802 (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 116660224 + ... + 116684096.

It is an arithmetic number, because the mean of its divisors is an integer number (26260922520).

Almost surely, 22785314475680 is an apocalyptic number.

2785314475680 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 2785314475680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5042097123840).

2785314475680 is an abundant number, since it is smaller than the sum of its proper divisors (7298879772000).

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

2785314475680 is a wasteful number, since it uses less digits than its factorization.

2785314475680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25084 (or 25076 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 60.

The spelling of 2785314475680 in words is "two trillion, seven hundred eighty-five billion, three hundred fourteen million, four hundred seventy-five thousand, six hundred eighty".