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13222371 = 343102499
BaseRepresentation
bin110010011100…
…000111100011
3220212202200110
4302130013203
511341103441
61151222403
7220250121
oct62340743
926782613
1013222371
117511188
124517a03
13297c4b6
141a82911
151262b16
hexc9c1e3

13222371 has 8 divisors (see below), whose sum is σ = 18040000. Its totient is φ = 8609832.

The previous prime is 13222343. The next prime is 13222411. The reversal of 13222371 is 17322231.

13222371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13222371 - 210 = 13221347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13222301) 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, 51121 + ... + 51378.

It is an arithmetic number, because the mean of its divisors is an integer number (2255000).

Almost surely, 213222371 is an apocalyptic number.

13222371 is a deficient number, since it is larger than the sum of its proper divisors (4817629).

13222371 is a wasteful number, since it uses less digits than its factorization.

13222371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102545.

The product of its digits is 504, while the sum is 21.

The square root of 13222371 is about 3636.2578291425. The cubic root of 13222371 is about 236.4665850670.

The spelling of 13222371 in words is "thirteen million, two hundred twenty-two thousand, three hundred seventy-one".

Divisors: 1 3 43 129 102499 307497 4407457 13222371