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7144169 = 20633463
BaseRepresentation
bin11011010000001011101001
3111102221221212
4123100023221
53312103134
6413042505
7114503324
oct33201351
914387855
107144169
11403a57a
122486435
131631a26
14d3d7bb
15961bce
hex6d02e9

7144169 has 4 divisors (see below), whose sum is σ = 7149696. Its totient is φ = 7138644.

The previous prime is 7144153. The next prime is 7144201. The reversal of 7144169 is 9614417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9614417 = 19494933.

It is a cyclic number.

It is not a de Polignac number, because 7144169 - 24 = 7144153 is a prime.

It is a super-2 number, since 2×71441692 = 102078301401122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7144129) 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 3 ways as a sum of consecutive naturals, for example, 332 + ... + 3794.

It is an arithmetic number, because the mean of its divisors is an integer number (1787424).

Almost surely, 27144169 is an apocalyptic number.

It is an amenable number.

7144169 is a deficient number, since it is larger than the sum of its proper divisors (5527).

7144169 is a wasteful number, since it uses less digits than its factorization.

7144169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5526.

The product of its digits is 6048, while the sum is 32.

The square root of 7144169 is about 2672.8578338550. The cubic root of 7144169 is about 192.5974679289.

The spelling of 7144169 in words is "seven million, one hundred forty-four thousand, one hundred sixty-nine".

Divisors: 1 2063 3463 7144169