Search a number
-
+
2644145 = 57312437
BaseRepresentation
bin1010000101100010110001
311222100002022
422011202301
51134103040
6132401225
731321610
oct12054261
94870068
102644145
111546649
12a76215
137176aa
144cb877
153736b5
hex2858b1

2644145 has 16 divisors (see below), whose sum is σ = 3744768. Its totient is φ = 1753920.

The previous prime is 2644141. The next prime is 2644151. The reversal of 2644145 is 5414462.

It is not a de Polignac number, because 2644145 - 22 = 2644141 is a prime.

It is a super-4 number, since 4×26441454 (a number of 27 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2644141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134 + ... + 2303.

It is an arithmetic number, because the mean of its divisors is an integer number (234048).

22644145 is an apocalyptic number.

It is an amenable number.

2644145 is a deficient number, since it is larger than the sum of its proper divisors (1100623).

2644145 is a wasteful number, since it uses less digits than its factorization.

2644145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480.

The product of its digits is 3840, while the sum is 26.

The square root of 2644145 is about 1626.0827162233. The cubic root of 2644145 is about 138.2807593639.

The spelling of 2644145 in words is "two million, six hundred forty-four thousand, one hundred forty-five".

Divisors: 1 5 7 31 35 155 217 1085 2437 12185 17059 75547 85295 377735 528829 2644145