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13174489 = 41321329
BaseRepresentation
bin110010010000…
…011011011001
3220210100000001
4302100123121
511333040424
61150213001
7216660406
oct62203331
926710001
1013174489
117489209
1244b4161
132963773
141a6d2ad
151253844
hexc906d9

13174489 has 4 divisors (see below), whose sum is σ = 13495860. Its totient is φ = 12853120.

The previous prime is 13174487. The next prime is 13174493. The reversal of 13174489 is 98447131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98447131 = 149660719.

It can be written as a sum of positive squares in 2 ways, for example, as 4665600 + 8508889 = 2160^2 + 2917^2 .

It is a cyclic number.

It is not a de Polignac number, because 13174489 - 21 = 13174487 is a prime.

It is a super-2 number, since 2×131744892 = 347134320822242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13174481) 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, 160624 + ... + 160705.

It is an arithmetic number, because the mean of its divisors is an integer number (3373965).

Almost surely, 213174489 is an apocalyptic number.

It is an amenable number.

13174489 is a deficient number, since it is larger than the sum of its proper divisors (321371).

13174489 is an equidigital number, since it uses as much as digits as its factorization.

13174489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321370.

The product of its digits is 24192, while the sum is 37.

The square root of 13174489 is about 3629.6678911438. The cubic root of 13174489 is about 236.1808020325.

The spelling of 13174489 in words is "thirteen million, one hundred seventy-four thousand, four hundred eighty-nine".

Divisors: 1 41 321329 13174489