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22230013 = 134736383
BaseRepresentation
bin101010011001…
…1001111111101
31112211101211211
41110303033331
521142330023
62112244421
7356644351
oct124631775
945741754
1022230013
1111603813
127540711
1347b4470
142d49461
151e41a0d
hex15333fd

22230013 has 8 divisors (see below), whose sum is σ = 24450048. Its totient is φ = 20082864.

The previous prime is 22229993. The next prime is 22230023. The reversal of 22230013 is 31003222.

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 22230013 - 217 = 22098941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22229975 and 22230002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22230023) 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, 17581 + ... + 18802.

It is an arithmetic number, because the mean of its divisors is an integer number (3056256).

Almost surely, 222230013 is an apocalyptic number.

It is an amenable number.

22230013 is a deficient number, since it is larger than the sum of its proper divisors (2220035).

22230013 is a wasteful number, since it uses less digits than its factorization.

22230013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36443.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 22230013 is about 4714.8714722673. The cubic root of 22230013 is about 281.1770729108.

Adding to 22230013 its reverse (31003222), we get a palindrome (53233235).

The spelling of 22230013 in words is "twenty-two million, two hundred thirty thousand, thirteen".

Divisors: 1 13 47 611 36383 472979 1710001 22230013