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13141288 = 231642661
BaseRepresentation
bin110010001000…
…010100101000
3220201122110101
4302020110220
511331010123
61145355144
7216461536
oct62102450
926648411
1013141288
117466276
124498ab4
132951614
141a61156
151248aad
hexc88528

13141288 has 8 divisors (see below), whose sum is σ = 24639930. Its totient is φ = 6570640.

The previous prime is 13141283. The next prime is 13141309. The reversal of 13141288 is 88214131.

It can be written as a sum of positive squares in only one way, i.e., 8655364 + 4485924 = 2942^2 + 2118^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13141283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821323 + ... + 821338.

Almost surely, 213141288 is an apocalyptic number.

It is an amenable number.

13141288 is a deficient number, since it is larger than the sum of its proper divisors (11498642).

13141288 is a wasteful number, since it uses less digits than its factorization.

13141288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642667 (or 1642663 counting only the distinct ones).

The product of its digits is 1536, while the sum is 28.

The square root of 13141288 is about 3625.0914471224. The cubic root of 13141288 is about 235.9822355680.

The spelling of 13141288 in words is "thirteen million, one hundred forty-one thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 1642661 3285322 6570644 13141288