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13006245 = 357971277
BaseRepresentation
bin110001100111…
…010110100101
3220110210012210
4301213112211
511312144440
61142434033
7215360040
oct61472645
926423183
1013006245
11738386a
124432919
132905005
141a27c57
15121da80
hexc675a5

13006245 has 32 divisors (see below), whose sum is σ = 24046848. Its totient is φ = 5879808.

The previous prime is 13006219. The next prime is 13006249. The reversal of 13006245 is 54260031.

It is a happy number.

13006245 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13006245 - 211 = 13004197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13006249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9547 + ... + 10823.

It is an arithmetic number, because the mean of its divisors is an integer number (751464).

Almost surely, 213006245 is an apocalyptic number.

13006245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13006245 is a deficient number, since it is larger than the sum of its proper divisors (11040603).

13006245 is a wasteful number, since it uses less digits than its factorization.

13006245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 13006245 is about 3606.4171971640. The cubic root of 13006245 is about 235.1711142449.

Adding to 13006245 its reverse (54260031), we get a palindrome (67266276).

The spelling of 13006245 in words is "thirteen million, six thousand, two hundred forty-five".