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13245471 = 33490573
BaseRepresentation
bin110010100001…
…110000011111
3220220221101000
4302201300133
511342323341
61151521343
7220404351
oct62416037
926827330
1013245471
117527578
124529253
132989b75
141a8b0d1
1512698b6
hexca1c1f

13245471 has 8 divisors (see below), whose sum is σ = 19622960. Its totient is φ = 8830296.

The previous prime is 13245467. The next prime is 13245473. The reversal of 13245471 is 17454231.

13245471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13245471 - 22 = 13245467 is a prime.

It is a super-3 number, since 3×132454713 (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 490573 = 13245471 / (1 + 3 + 2 + 4 + 5 + 4 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13245473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245260 + ... + 245313.

It is an arithmetic number, because the mean of its divisors is an integer number (2452870).

Almost surely, 213245471 is an apocalyptic number.

13245471 is a deficient number, since it is larger than the sum of its proper divisors (6377489).

13245471 is an equidigital number, since it uses as much as digits as its factorization.

13245471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490582 (or 490576 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 13245471 is about 3639.4327854763. The cubic root of 13245471 is about 236.6042104143.

The spelling of 13245471 in words is "thirteen million, two hundred forty-five thousand, four hundred seventy-one".

Divisors: 1 3 9 27 490573 1471719 4415157 13245471