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22130013 = 325728703
BaseRepresentation
bin101010001101…
…0110101011101
31112122022200010
41110122311131
521131130023
62110153433
7356046663
oct124326535
945568603
1022130013
1111545674
1274b2879
13477aaa9
142d20c33
151e22093
hex151ad5d

22130013 has 8 divisors (see below), whose sum is σ = 29622528. Its totient is φ = 14695424.

The previous prime is 22129999. The next prime is 22130029. The reversal of 22130013 is 31003122.

It is a happy number.

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 22130013 - 25 = 22129981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22130083) 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, 13581 + ... + 15122.

It is an arithmetic number, because the mean of its divisors is an integer number (3702816).

Almost surely, 222130013 is an apocalyptic number.

It is an amenable number.

22130013 is a deficient number, since it is larger than the sum of its proper divisors (7492515).

22130013 is a wasteful number, since it uses less digits than its factorization.

22130013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28963.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 22130013 is about 4704.2547762637. The cubic root of 22130013 is about 280.7548213246.

Adding to 22130013 its reverse (31003122), we get a palindrome (53133135).

The spelling of 22130013 in words is "twenty-two million, one hundred thirty thousand, thirteen".

Divisors: 1 3 257 771 28703 86109 7376671 22130013