[go: up one dir, main page]

Search a number
-
+
7148961 = 326831163
BaseRepresentation
bin11011010001010110100001
3111110012112100
4123101112201
53312231321
6413121013
7114523311
oct33212641
914405470
107148961
114043136
122489169
131633c71
14d41441
15963326
hex6d15a1

7148961 has 12 divisors (see below), whose sum is σ = 10350288. Its totient is φ = 4754904.

The previous prime is 7148951. The next prime is 7148987. The reversal of 7148961 is 1698417.

It is not a de Polignac number, because 7148961 - 213 = 7140769 is a prime.

It is a super-2 number, since 2×71489612 = 102215286759042, which contains 22 as substring.

It is a Curzon number.

7148961 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7148951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5566 + ... + 6728.

It is an arithmetic number, because the mean of its divisors is an integer number (862524).

Almost surely, 27148961 is an apocalyptic number.

It is an amenable number.

7148961 is a deficient number, since it is larger than the sum of its proper divisors (3201327).

7148961 is a wasteful number, since it uses less digits than its factorization.

7148961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852 (or 1849 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 7148961 is about 2673.7541023811. The cubic root of 7148961 is about 192.6405203255.

The spelling of 7148961 in words is "seven million, one hundred forty-eight thousand, nine hundred sixty-one".

Divisors: 1 3 9 683 1163 2049 3489 6147 10467 794329 2382987 7148961