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12502213 = 18169073
BaseRepresentation
bin101111101100…
…010011000101
3212112011210221
4233230103011
511200032323
61123544341
7211160413
oct57542305
925464727
1012502213
11706a109
12422b0b1
132789779
1419362b3
15116e55d
hexbec4c5

12502213 has 4 divisors (see below), whose sum is σ = 12571468. Its totient is φ = 12432960.

The previous prime is 12502187. The next prime is 12502229. The reversal of 12502213 is 31220521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2879809 + 9622404 = 1697^2 + 3102^2 .

It is a cyclic number.

It is not a de Polignac number, because 12502213 - 25 = 12502181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12502013) 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 3 ways as a sum of consecutive naturals, for example, 34356 + ... + 34717.

It is an arithmetic number, because the mean of its divisors is an integer number (3142867).

Almost surely, 212502213 is an apocalyptic number.

It is an amenable number.

12502213 is a deficient number, since it is larger than the sum of its proper divisors (69255).

12502213 is an equidigital number, since it uses as much as digits as its factorization.

12502213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69254.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 12502213 is about 3535.8468575435. The cubic root of 12502213 is about 232.0931366539.

Adding to 12502213 its reverse (31220521), we get a palindrome (43722734).

The spelling of 12502213 in words is "twelve million, five hundred two thousand, two hundred thirteen".

Divisors: 1 181 69073 12502213