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13215241 = 131953503
BaseRepresentation
bin110010011010…
…011000001001
3220212101220101
4302122120021
511340341431
61151125401
7220220254
oct62323011
926771811
1013215241
117506896
124513861
132979190
141a8009b
151260961
hexc9a609

13215241 has 8 divisors (see below), whose sum is σ = 14981120. Its totient is φ = 11556432.

The previous prime is 13215229. The next prime is 13215247. The reversal of 13215241 is 14251231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13215241 - 27 = 13215113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (13215247) 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, 26505 + ... + 26998.

It is an arithmetic number, because the mean of its divisors is an integer number (1872640).

Almost surely, 213215241 is an apocalyptic number.

It is an amenable number.

13215241 is a deficient number, since it is larger than the sum of its proper divisors (1765879).

13215241 is a wasteful number, since it uses less digits than its factorization.

13215241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53535.

The product of its digits is 240, while the sum is 19.

The square root of 13215241 is about 3635.2772934124. The cubic root of 13215241 is about 236.4240735312.

Adding to 13215241 its reverse (14251231), we get a palindrome (27466472).

It can be divided in two parts, 13215 and 241, that added together give a square (13456 = 1162).

The spelling of 13215241 in words is "thirteen million, two hundred fifteen thousand, two hundred forty-one".

Divisors: 1 13 19 247 53503 695539 1016557 13215241