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13222960 = 245165287
BaseRepresentation
bin110010011100…
…010000110000
3220212210111021
4302130100300
511341113320
61151225224
7220251622
oct62342060
926783437
1013222960
117511673
124518214
13297c84a
141a82c12
151262daa
hexc9c430

13222960 has 20 divisors (see below), whose sum is σ = 30743568. Its totient is φ = 5289152.

The previous prime is 13222939. The next prime is 13222967. The reversal of 13222960 is 6922231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (13222967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82564 + ... + 82723.

Almost surely, 213222960 is an apocalyptic number.

13222960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13222960 is an abundant number, since it is smaller than the sum of its proper divisors (17520608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13222960 is a wasteful number, since it uses less digits than its factorization.

13222960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165300 (or 165294 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 13222960 is about 3636.3388180971. The cubic root of 13222960 is about 236.4700962061.

The spelling of 13222960 in words is "thirteen million, two hundred twenty-two thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 165287 330574 661148 826435 1322296 1652870 2644592 3305740 6611480 13222960