Search a number
-
+
2175244040 = 23571765931
BaseRepresentation
bin1000000110100111…
…1001011100001000
312121121002211212002
42001221321130020
513423330302130
6555503010132
7104622161234
oct20151713410
95547084762
102175244040
11a16961052
12508599948
13288874568
14168c755c4
15cae7bb45
hex81a79708

2175244040 has 32 divisors (see below), whose sum is σ = 4963239360. Its totient is φ = 857841600.

The previous prime is 2175244039. The next prime is 2175244091. The reversal of 2175244040 is 404425712.

It is a junction number, because it is equal to n+sod(n) for n = 2175243994 and 2175244012.

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 7 ways as a sum of consecutive naturals, for example, 380126 + ... + 385805.

It is an arithmetic number, because the mean of its divisors is an integer number (155101230).

Almost surely, 22175244040 is an apocalyptic number.

2175244040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2175244040 is an abundant number, since it is smaller than the sum of its proper divisors (2787995320).

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

2175244040 is a wasteful number, since it uses less digits than its factorization.

2175244040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766013 (or 766009 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 2175244040 is about 46639.5115754872. The cubic root of 2175244040 is about 1295.6946408177.

Adding to 2175244040 its reverse (404425712), we get a palindrome (2579669752).

The spelling of 2175244040 in words is "two billion, one hundred seventy-five million, two hundred forty-four thousand, forty".

Divisors: 1 2 4 5 8 10 20 40 71 142 284 355 568 710 1420 2840 765931 1531862 3063724 3829655 6127448 7659310 15318620 30637240 54381101 108762202 217524404 271905505 435048808 543811010 1087622020 2175244040