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13288478 = 275317909
BaseRepresentation
bin110010101100…
…010000011110
3221000010100212
4302230100132
511400212403
61152452422
7220643630
oct62542036
927003325
1013288478
117556915
12454a112
1329a3608
141a9ca50
1512774d8
hexcac41e

13288478 has 16 divisors (see below), whose sum is σ = 23211360. Its totient is φ = 5587296.

The previous prime is 13288447. The next prime is 13288481. The reversal of 13288478 is 87488231.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8213 + ... + 9696.

It is an arithmetic number, because the mean of its divisors is an integer number (1450710).

Almost surely, 213288478 is an apocalyptic number.

13288478 is a deficient number, since it is larger than the sum of its proper divisors (9922882).

13288478 is a wasteful number, since it uses less digits than its factorization.

13288478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17971.

The product of its digits is 86016, while the sum is 41.

The square root of 13288478 is about 3645.3364728102. The cubic root of 13288478 is about 236.8600121631.

The spelling of 13288478 in words is "thirteen million, two hundred eighty-eight thousand, four hundred seventy-eight".

Divisors: 1 2 7 14 53 106 371 742 17909 35818 125363 250726 949177 1898354 6644239 13288478