Search a number
-
+
7288965 = 325161977
BaseRepresentation
bin11011110011100010000101
3111201022120200
4123303202011
53331221330
6420121113
7115645425
oct33634205
914638520
107288965
114129342
122536199
1316828c8
14d7a485
1598ea60
hex6f3885

7288965 has 12 divisors (see below), whose sum is σ = 12634284. Its totient is φ = 3887424.

The previous prime is 7288949. The next prime is 7288969. The reversal of 7288965 is 5698827.

7288965 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3090564 + 4198401 = 1758^2 + 2049^2 .

It is not a de Polignac number, because 7288965 - 24 = 7288949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 161977 = 7288965 / (7 + 2 + 8 + 8 + 9 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 7288965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7288969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80944 + ... + 81033.

It is an arithmetic number, because the mean of its divisors is an integer number (1052857).

Almost surely, 27288965 is an apocalyptic number.

It is an amenable number.

7288965 is a deficient number, since it is larger than the sum of its proper divisors (5345319).

7288965 is a wasteful number, since it uses less digits than its factorization.

7288965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161988 (or 161985 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 7288965 is about 2699.8083265299. The cubic root of 7288965 is about 193.8899453727.

The spelling of 7288965 in words is "seven million, two hundred eighty-eight thousand, nine hundred sixty-five".

Divisors: 1 3 5 9 15 45 161977 485931 809885 1457793 2429655 7288965